ALGEBRA II WITH TRIGONOMETRY EXAM
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1 First Round: February, 07 at Regional Testing Centers Second Round: April 8, 07 at The University of North Alabama ALGEBRA II WITH TRIGONOMETRY EXAM Construction of this test directed by Miranda Bowie and Ashley Johnson, The University of North Alabama INSTRUCTIONS This test consists of 0 multiple choice questions. The questions have not been arranged in order of difficulty. For each question, choose the best of the five answer choices labeled A, B, C, D and E. The test will be scored as follows: points for each correct answer, point for each question left unanswered and 0 points for each wrong answer. (Thus a perfect paper with all questions answered correctly earns a score of 0, a blank paper earns a score of 0, and a paper with all questions answered incorrectly earns a score of 0.) Random guessing will not, on average, either increase or decrease your score. However, if you can eliminate one or more of the answer choices as wrong, then it is to your advantage to guess among the remaining choices. All variables and constants, except those indicated otherwise, represent real numbers. Diagrams are not necessarily to scale. We use the following geometric notation: If A and B are points, then: AB is the segment between A and B AB is the line containing A and B AB is the ray from A through B AB is the distance between A and B If A is an angle, then m A is the measure of angle A in degrees. If A and B are points on a circle, then AB is the arc between A and B. If A and B are points on a circle, then mab is the measure of AB in degrees. If AB = CD, then AB and CD are congruent. If ABC = DEF, then ABC and DEF are congruent. If ABC DEF, then ABC and DEF are similar. If l, m are two lines, then l m means l and m are perpendicular. Printing by The University of North Alabama
2 Why Major in Mathematics? What sorts of jobs can I get with a mathematics degree? Examples of occupational opportunities available to math majors: Market Research Analyst Air Traffic Controller Climate Analyst Estimator Research Scientist Computer Programmer Cryptanalyst Professor Pollster Population Ecologist Operations Research Data Mining Mathematician Meteorologist Medical Doctor Lawyer Actuary Statistician Where can I work? What sorts of companies hire mathematicians? Well just to name a few... U.S. Government Agencies such as the National Center for Computing Sciences, the National Institute of Standards and Technology (NIST), the National Security Agency (NSA), and the U.S. Department of Energy. Government labs and research offices such as Air Force Office of Scientific Research, Los Alamos National Laboratory, and Sandia National Laboratory. Engineering research organizations such as AT&T Laboratories - Research, Exxon Research and Engineering, and IBM Research. Computer information and software firms such as Adobe, Google, Mentor Graphics, Microsoft, and Yahoo Research. Electronics and computer manufacturers such as Alcatel-Lucent, Hewlett-Packard, Honeywell, Philips Research, and SGI. Aerospace and transportation equipment manufacturers such as Boeing, Ford, General Motors, and Lockheed Martin. Transportation service providers such as FedEx Corporation and United Parcel Service (UPS). Financial service and investment manangement firms such as Citibank, Morgan Stanley, and Prudential. A Mathematics Major isn t just for those wanting to be Mathematicians! The top scoring major on the Law School Entrance Exam (LSAT) is Mathematics (Source: Journal of Economic Education) Mathematics is also a top scoring major on the Medical School Entrance Exam (MCAT) (Source: American Institute of Physics) Study in the field of mathematics offers an education with an emphasis on careful problem solving, precision of thought and expression, and the mathematical skills needed for work in many other areas. Many important problems in government, private industry, and health and environmental fields require mathematical techniques for their solutions. The study of mathematics provides specific analytical and quantitative tools, as well as general problem-solving skills, for dealing with these problems. The University of North Alabama offers an undergraduate degree in Mathematics and has many great things to offer, including a new Mathematics Fellow program, an active undergraduate research group and a new Dual Degree Engineering program. For more information, go to
3 [. Simplify (8) ( ) ( / 9 / ) ] + () 0 /. 7 (6) / The function f(x) = x x + is: Odd Even Neither even nor odd Both even and odd. Two non-zero real numbers, a and b, satisfy ab = a b. What is the value of (a/b) + (b/a) ab?. In a particular geometric series with a nonzero first term, the sum of the first 6 terms is equal to 9 times the sum of the first terms. Find the common ratio Your history teacher gives you a five question multiple choice quiz where each question has four possible answer choices. You forgot to study and are going to have to guess at random. What is the probability you get an 80% or better on the quiz? What is the shortest distance from point (, ) to the circle given by (x ) + (y + ) =? 7. Find the sum of the squares of all real roots of the function f(x) = x e x e x x e x Find the absolute value of the sum of the solutions to the equation (x 6)(x + ) = For how many integers x in {,,,..., 99, 00} is x + x equal to the square of an integer? The inequality x has a solution set of the form [a, b]. Find b a The polynomial p(x) = x 7 6x 6 x + 00x 70x + 8x 088x + 8 has as a root of multiplicity 6. Find another root of p(x). 6 6
4 . On August, Jose Altuve had a batting average of 0.0 (A batting average is calculated as the total number of hits divided by total number of at-bats). Over the next two weeks, he went through a bit of a slump and only got hits in his next 0 at bats. On August, his batting average had dropped to 0.0. How many hits did he have as of August? Simplify the expression ( + i)7 into a + bi form. ( i) 6 + i i i + i. A cubic polynomial f(x) = ax + bx + cx + d has a graph which is tangent to the x-axis at x =, has another x-intercept at x = and has a y-intercept at y = as shown below. Find the sum a + b + c + d. 0. If f( x ) = x + x +, what is the largest value of z satisfying f(z) =? 6. The number k is entered in a calculator. When the button is pressed n times in succession, the final answer is. What is the value of k? n n n n 7. Which of the following are true for all values in their respective domains? I. x + 9 = x + II. log(xy) = log(x) + log(y) III. (x + ) / = (6x + ) / I and II II and III I, II, and III II only III only 8. How many times does the graph of the function f(x) = x x x x + x cross its horizontal x 8 asymptote(s)? 0 9. What is the minimum value of the function f(x) = x x + 9 on its domain? Find the product of the smallest solution and the largest solution of the equation (x )(6x 9) + (x )(x ) + (6x 9)(x 7) = How many integers are in the solution set of the inequality x x + 9 x x Infinitely many < 0?
5 . Find the sum of the smallest and the largest x-intercepts of the graph of y = x x + 8x. 0. You randomly order the letters A P R I L. What is the probability that the I and L are next to each other? 0. Consider the sequence a =, a = 6, a =, a =, a =,... Which of the following is the correct expression for a n? a n = a n = (n)! (n )! (n + )! n a n = n a n = n+ (n )! (n + )! n+ a n = n. The graph of f(x) = ln x is reflected across the line y = x. What is the equation of the reflection? y = e x y = ln x y = e x y = ln( x) 6. The equation x x + = 6 has how many solutions which are less than zero? 0 7. Find the equation of the line perpendicular to, and with the same y-intercept as, the line whose equation is x y = 0. y = x y = x y = x y = x ( ) x ( ) x 8. Find the product of the solutions of the equation + + = A projectile is launched straight up from ground level, and its height s in feet, after t seconds, can be modeled by the equation s = 6t + 88t. For how long is the projectile at or above a height of ft? 6 seconds 9 seconds seconds 8 seconds 0. A particular town has a tax rate on food of 0%. Miranda tips 0% on the post-tax total. She heard from Ashley that you re actually supposed to tip on the pre-tax total. What percentage has Miranda been tipping on the pre-tax total? 8% % % 0%. Find the remainder when x is divided by x x +. x x x x x + x 0
6 . For two positive numbers a and b, the sum a+b, the product a b, and the difference of squares a b equal the same non-zero number. What is a b? + +. An after-dinner speaker anticipates delivering speeches during the next years. So as not to become bored, he decides to tell exactly jokes in every speech, and in no two speeches to tell exactly the same jokes. What is the minimum number of jokes that will accomplish this? The graphs of f(x) and g(x) are below. Express g(x) in terms of f(x). Graph of f(x) Graph of g(x) g(x) = f(x + ) + g(x) = f(x + ) + g(x) = f(x ) + g(x) = f(x ) +. Solve the equation x x + 6x + = 6x x + x Let f(x) = x 7 + ax + bx + 8x, where f() = and f() = 8. Find f( ). No solution Let P (n) and S(n) denote the product and the sum respectively of the digits of the integer n. For example, P () = 6 and S() =. Suppose N is a two-digit number such that N = P (N) + S(N). What is the units digit of N? Let f(x) = x x and g(x) = x / x. Find the sum of all the zeros of (g f)(x) Two operations & and % are defined as a&b = a b and a%b = ab. Find %(&) For x > 0, simplify the expression + ( x x ). + x x + x + x x + x x x x x
7 Problem # thrown out. Typo: cards numbered through 0, not through 0.. A single card is drawn from a standard deck of cards. What is the probability the card drawn is an Eight or a Heart? (Recall that a deck has four suits: Heart, Diamond, Spade, Club, each containing an Ace, cards numbered through 0, a Jack, Queen and King) 7. Solve the equation x + + x x + x =. 0 9 No solution =. Suppose the parabola y = ax + bx + c passes through the points (, ), (, 0) and (, ). Find a + b + c. 9. Suppose that x = p, where x <. Which of the following is equivalent to x p? p p p. Find the number of distinct real values of x which have the property that the median of the five numbers x, 6,,, 9 is equal to their mean. 6. Find the smallest y value at which the graphs of y = x 0x x + and y = x intersect If a b + = 7, and b + =, find the value of a + b What is the slope of the line which connects the center of the circle (x ) + (y + ) = 9 and the vertex of the parabola y = x 6x +? 9. How many ordered pairs (x, y), where x and y are both integers, satisfy the equation x + y =? 9 0. Find the sum of the negative solutions to the equation ( x + x ) x = 9x
ALABAMA STATEWIDE MATHEMATICS CONTEST
The rd Annual ALABAMA STATEWIDE MATHEMATICS CONTEST First Round: February, 014 at Regional Testing Centers Second Round: March 1, 014 at The University of North Alabama ALGEBRA II WITH TRIGONOMETRY EXAM
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