3. Find the area for each question below. a. (3x 2)(2x + 5) b. 4. Simplify the expressions below. is equal to 1, what is the value of a?
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1 Permitted resources: Algebra 1 Midterm Review FSA Approved calculator Algebra 1 FSA Reference Sheet 1. The expression 13x + 5 represents the number of marbles you have after shopping at the game store, where x is the number of bags of marbles you purchased. a. How many marbles did you start with? b. What does the term 13x represent? 2. The expression 21x + 75 represents the monthly tuition and the one-time materials fee that Jaime pays for his children to join a science club. a. What does the term 21x represent in context, for the above expression? b. What does the term 75 represent in context, for the above expression? 3. Find the area for each question below. a. (3x 2)(2x + 5) b. (5y + 5) 4. Simplify the expressions below. a. (y 3 ) 2 y 4 b. (z 3 ) 2 z 3 (2y 3) 5. If the expression 3a is equal to 1, what is the value of a? 5 6. Which of the following are equivalent to b b a. b 6 5 d. b b b. b 5 c. b e. ( b 7. Re-write each expression using rational exponents. a. 7y 3 3 b. ( k c c. p a ) 5 ) 6? Select all that apply.
2 8. Simplify each of the following. 1 a. x 4 b. 3 x4 2 m 5n m 3 5n c. 27c 6d 3 1 3c6d 5 9. Label each number as rational or irrational. Then state what it s result will be. a c b d Solve the equations below. a. 2(t + 4) = 7 + 5(t 4) b. 5(4w 2) = 8 + 2(w 6) Solve the equation below. Identify the property used in each step. a. 4(3x 8) = 52 b. 5( 2x + 7) = Teddy has 23 boxes of juice packed and plans to pack 3 additional boxes each hour. Charley has 7 boxes packed and plans to pack 5 additional boxes each hour. The equation below represents when Teddy and Charley will have packed the same number of boxes, based on x number of hours x = 5x + 7 After how many hours will Charley have packed the same number of boxes of juice as Teddy?
3 13. Name the property for each step in solving the equation below. Statement 2(8x 6) = x 12 = x = 384 x = 24 Given Reason 14. There are a total of 36 cards in Aleera s collection. The number of baseball cards is 6 less than twice the number of football cards. Let x represent the number of football cards. How many baseball cards does Aleera have? 15. The perimeter of a rectangle is 84 meters. The length is 7 meters less than twice the width. Let x be the width. What is the width of the rectangle? What is the length of the triangle? 16. Solve the inequality 5a 3 8 or 2a 9 17 and graph the solution. 17. Solve and graph the inequality 17 x Millie needs the average height of the plants she is buying to be at least 73 inches. She has selected three plants that are 70, 71, and 72 inches tall. Write and solve an inequality that Millie could use to determine the possible heights of her fourth plant.
4 19. Mrs. Hawk assigns her students an average of no more than 15 questions on each assignment. On their first 5 assignments Mrs. Hawk s students had 11, 10, 13, 14, and 14 questions. Write and solve an inequality that Mrs. Hawk can use to determine the number of questions she can have on the sixth assignment. 20. Solve each equation for the specified variable. a. kx = fy m solve for y. b. b = fy m solve for f. 21. The graph of the equation Hx + 3y = 48 passes through the point ( 3, 14). What value of H accurately completes the equation? 22. The graph of the equation 2x + My = 13 passes through the point ( 18, 7). What value of M accurately completes the equation? 23. Marcy has $150 to buy packages of hot dogs and hamburgers for her booth at the carnival. At her local grocery store she found packages of hot dogs cost $6 and packages of hamburgers cost $20. Let d, represent hot dogs and h represent hamburgers. a. Write an equation that can be used to find the possible combination of hot dog and hamburger packages Marcy can buy using her budget of exactly $150. b. Solve the equation for d.
5 24. Andrew needs exactly 120 pencils and markers for his class to play the review game he created. His supply closet has boxes of pencils with 12 in each and boxes of markers with 6 in each. Let p represent pencils and m represent markers. a. Write an equation that can be used to find the number of boxes of pencils and boxes of markers Andrew will need to take to reach his total of 120. b. Solve the equation for m. 25. Explain why each relation below is or is not a function. a) x y b) x y A taxi company charges passengers $1.00 for a ride, and an additional $0.30 for each mile traveled. The function rule C ( m ) 0. 3m 1 describes the relationship between the number of miles m and the total cost of the ride C. If the taxi company charges you $13.00 how far did you travel? 27. A gym charges its members a one-time $10.00 sign-up fee, and $25 per month. The function rule f ( x ) 25x 10 describes the relationship between the number of months x, and the total cost of membership f(x). If a gym member paid $ how many months did the gym member pay for?
6 28. Simplify each expression. a. (3x 3 + 2x 2 3x 2) (x 2 + 5x 6) b. (12y 2 + 5y 6) (9x 2 3x 4) c. (2k 5)(3k + 6) d. (6m 2)(2m 2 3m + 2) 29. Given f(x) = 3x + 5 and g(x) = 8x 10. Using the closure property, which operation shows that the function is NOT closed. a. Find f(x) + g(x) b. Find f(x) g(x) c. Find f(x) g(x) d. Find f(x) g(x) 30. Which of the following statements are true? Select all that apply. a. Polynomials are closed under addition. b. Polynomials are closed under subtraction. c. Polynomials are closed under multiplication. d. Polynomials are closed under division. 31. Jim uses the function f(x) = 0.7x + 23 to determine the amount he charges for each used drone he sells, where x is the original value of the drone. The function g(x) = 1.08x is used to determine the total amount a customer pays for a drone at Jim s store after 8% sales tax. Write a function to determine the total amount a customer pays for a used drone at Jim s store including 8% sales tax.
7 32. Elias ships a popular video game to stores around the country. The graph below shows the number of games Elias has left in his warehouse and the number of shipments he has made. a. What does the y-intercept of the graph above represent in this situation? b. What are the domain and range? Write your answer in interval notation. 33. You have 8 cups of flour. It takes 1 cup of flour to make 24 cookies. The function c(f) = 24f represents the number of cookies, c, that can be made with f cups of flour. 300 c(f) a. What domain and range are reasonable for the function? b. What does the y-intercept represent in this situation? f 34. Elissa uses the function P(h) = 15h to represent the money she makes working at the party store for h hours each week. The function C(h) = 25h + 30 represents the money she makes cleaning houses in the neighborhood. Write a function T to describe the total amount of money Elissa makes each week working h hours.
8 35. The graph below shows the average Valentine s Day spending between 2003 and a. What is the average rate of change in spending between 2005 and 2007? b. What is the average rate of change in spending between 2007 and 2008? 36. Translate the graph of the equation 5 y x 2 to the left 4 units. Graph the translation Write the rule for the n th term of each sequence. a. 7, 4, 1, 2, b. 11, 3, 5, 13,
9 38. Mr. Cringle found a box of handmade holiday greeting cards in his garage and decided to make more to send to all his friends. After 2 hours had passed, Mr. Cringle had a total of 30 cards. After 6 hours had passed, he had a total of 40 cards. At what rate is Mr. Cringle making greeting cards and how many cards were in the box he found? 39. The scatter plot below shows the linear trend of the number of golf carts a company sold in the month of February and a line of best fit representing this trend. What is the meaning of the slope as a rate of change for this line of best fit? 40. Solve the system of equations below. 5x + 4y = 6 { 6x + y = Chapman s brickyard sells bricks and blocks. A brick costs $0.38 and a block costs $1.56. The brickyard filled a $24.80 order, which contained 28 items. Write a system of equations that can be used to find the number of bricks and blocks in the order. 42. The ballpark made a total of $15,000 from ticket sales at Wednesday s game. The ballpark charges $20 for each adult ticket and $10 for each child s ticket. They sold 3 times as many children s tickets as adult tickets. Write a system of equations that can be used to determine the number of adult and child tickets sold.
10 43. You decide to market your own custom computer software. You must invest $3,255 for computer hardware, and spend $2.90 to buy and package each disk. If each program sells for $13.75, write a system of equations and determine how many copies you must sell to break even. 2x + 3y = Which system is NOT equivalent to the system { 12x + 3y = 1 4x + 6y = 8 a. { 24x + 6y = 2 4x + 6y = 8 b. { 48x + 12y = 4 2x + 3y = 4 c. { 24x + 3y = 2 2x 3y = 4 d. { 12x 3y = Graph the inequalities below to show their solutions. a. y > 7 6 x + 5 b. y 3 4 x Graph the solutions of the following systems of inequalities. x + y > 1 { 5x + 2y < 10
11 47. Matt and his best friend Eric launched a rocket and then graphed the height of the rocket (in feet) as a function of time (in seconds) as shown. About how many seconds did it take for the rocket to fall to the ground? 48. Hope Solo kicked the soccer ball towards midfield. A graph of the height (in feet) and time (in seconds) that the ball traveled is shown. About how many seconds was the ball in flight? 49. A rectangle has an area of x 2 + x 6 and a width of x 2. Find the length of the rectangle by factoring. 50. Solve the quadratic equations below. a. x 2 + 4x 5 = 0
12 b. 3x = 22x + 5 c. 5x 3 20x = 0 d. x 2 6x 27 = 0 e. x 2 + 4x = Factor each expression. a. 3x 2 6x 24 b. 7x 2 + 9x Solve each equation using the quadratic formula x = b± b2 4ac. 2a a. x 2 + 3x + 2 = 0 c. 2x 2 + 5x = 1 b. 4x 2 + 8x 24 = 0 d. x x + 33 = Identify the vertex and the minimum or maximum value. y = x x + 40 (see graph below)
3. Find the area of each rectangle shown below. 4. Simplify the expressions below. 5. If the expression 3a 2 9. is equal to 3, what is the value of d?
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