Math Algebra I FORMATIVE MINI ASSESSMENT. Read each question and choose the best answer. Be sure to mark all of your answers.

Transcription

1 FORMATIVE MINI ASSESSMENT First Grading Period 29-1 October 2-2 STUDENT NAME DATE PERIOD Math Algebra I Read each question and choose the best answer. Be sure to mark all of your answers. 1 Jan planted a 5-foot-tall tree. According to her plant guide, the tree will grow 2 feet per year until it reaches a maximum height of 4 feet. Jan wants to know how tall the tree will be at various points in its life. Which equation could Jan use to determine how tall the tree will be if a is the age of the tree in years and h is its height in feet? A h = 2a 5 B h = 2a + 5 C h = 5a 2 D h = 5a + 2 Josh's age, in years, is represented by the variable j. Which expression represents Josh's age 1 years from now? A 1j B j 1 C j 1 D j Mobile Phones' cell phone tower is 4 feet shorter than times the height of Easy Phones' cell phone tower. If h represents the height of Easy Phones' tower, which expression represents the height of Mobile Phones' tower? 4 In January, Liam is going to open a savings account with $25. Each month after that, he will deposit $5. Which expression shows the amount of money Liam will have in his account after m months? F h 4 G 4h H (h 4) J 4(h ) F 5m + 25 G 5m + H 25m + 5 J m(25 + 5) 25 by Riverside Publishing (Edusoft) Algebra I FMA October 9 Page 1

2 5 This table shows the cost of renting a small moving van from Anderson Rent-a-Truck. Hours Rented Cost 1 $25 2 $ $5 4 $4 5 $45 7 Which shows the equation y 2x written in function notation? A f ( x) 2x B y 2x C x 2y D 2x y Which expression can be used to find the cost of renting this moving van for h hours? A h 5 B 5h 2 C 5h 25 D 2h 5 8 During the past 5 days, Rick counted the number of people who ran around the track at the park during the evening. Here is a table of the data he collected. Day Number of Runners The width of Paul's garage is 2x 5. The length of his garage is triple the width. Which expression describes the length of Paul's garage? F 2x 8 G 6x 15 H 6x + 15 J 8x What makes the data a linear function? F The number of days increases by 1. G Each of the number of days is a natural number. H The number of runners increases by 2 each day. J Each of the number of runners is an odd number. 25 by Riverside Publishing (Edusoft) Algebra I FMA October 9 Page 2

3 . 9 Josephine needs a mechanic to work on her car. She finds the rates charged by four mechanics, as shown in the table below. The cost of repairs (c) depends on the number of hours (h) the mechanic works. Mechanic A Mechanic B Mechanic C Mechanic D c 4h 15 c 45h c 4h 25 c 45h 5 Josephine's car needs 2 hours of work. Which mechanic is the least expensive? A Mechanic A B Mechanic B C Mechanic C D Mechanic D 1 This graph shows the altitude of an airplane and the steady rate of its descent for a landing. Altitude, in feet, 2,75 2,5 2,25 2, 1,75 1,5 1,25 1, y Time, in minutes According to this graph, how many feet per minute does the plane descend? F 1 G 25 H 5 J 1, x 11 Seiko made this graph showing the depth of the water in her swimming pool over time. Water Depth (in feet) y Swimming Pool Water Depth Time (in hours) Which of these describes the situation shown in the graph? A Seiko added water to the pool at a rate of 2 feet every hour. B Seiko added water to the pool at a rate of 1 foot every 2 hours. C Seiko drained water out of the pool at a rate of 2 feet every hour. D Seiko drained water out of the pool at a rate of 1 foot every 2 hours. x 25 by Riverside Publishing (Edusoft) Algebra I FMA October 9 Page

4 12 Ana rents a stroller for her baby sister at the mall. The graph below shows the cost to rent the stroller. 1 Seiko raises chickens. She uses this formula to estimate the weight in grams (w) of a chick a chick a weeks old. w = 4 + 7a Cost (in dollars) $25 $2 $15 $1 A chick is 5 weeks old. What is the estimated weight of this chick? $ Time (in hours) What is the rate of change during the second hour that Ana uses the stroller? F $2.5 per hour G $5. per hour H $7.5 per hour J $1. per hour 25 by Riverside Publishing (Edusoft) Algebra I FMA October 9 Page 4

5 14 Hanson High School spent $448. on a science club field trip to the science museum. The cost of the bus was $14., and the entrance fee was $4. per person. The equation below can be solved to determine how many people, p, went to the museum. 15 Solve for x. 6x + = 15 x =? 4p + 14 = 448 How many people went to the museum? 25 by Riverside Publishing (Edusoft) Algebra I FMA October 9 Page 5