Lesson 23 Rate of Change

Science – Grade 7 Week of March 17 –

28Session # 5

Sample Test QuestionsQuestion 1

Victoria’s family drove 672 miles in 14 hours. What was the average rate of speed for the trip?

A 50 mphB 48 mphC 45 mphD 42 mph

Question 2

At Kenneth’s school, tickets for a concert were sold at a rate of 40 tickets per half hour. How many tickets will be sold in 7 hours?

A 280B 470C 560D 740

Pie Production

Question 3The graph shows the

number of pies produced at a bakery as a function of time. What is the rate of pie production?

A 10 pies per hrB 15 pies per hrC 30 pies per hrD 60 pies per hr

Question 4

Clarissa made 18 gift baskets in 3 hours. How many gift baskets can she make in 5 hours?

A 15B 27C 30D 54

Growth of Martha’s Plant

HEIGHT

INCHES

Question 5

The graph shows the growth of a plant in Martha’s window box. What is the rate of growth of Martha’s plant?

A ½ in per weekB 1 in per weekC 2 in per weekD 5 in per week

Question 6

Carla read 90 pages of her novel in 2 hours. How many pages can she read in 7 hours?

A 45B 315C 520D 630

Question 7

Katrina rode a bus that traveled 17 miles every 20 minutes. The bus stayed at a constant speed for the entire trip.

A.Hour far does the bus travel in 1 hour? _____

B.Haw far will the bus travel in 1 ½ hours? _____

ANSWERS

1. B 48 MPH2. C 5603. B 15 pies per hour4. C 305. B 1 inch per week6. B 3157. A. 51 miles B. 76.5 miles

Progress CheckQuestion 1

What are the next two numbers in this pattern?1.2, 1.9, 2.6, 3.3, 4.0, …

A 4.2, 4.9B 4.7, 5.4C 4.7, 5.7D 5.2, 5.9

Question 2

What is the missing number in this pattern?60, 58, 56, 54, ___, 50, …

A 59B 53C 52D 51

Question 3

Solve for x: 8x = 72

A 8B 9C 10D 11

Question 4

What is the solution of this equation?

x – 8 = 55

A x = 42B x = 47C x = 58D x = 63

Question 5

Kimberly writes 6 pages every 2 hours. At this rate, how many pages can Kimberly write in 5 hours?

A 4B 8C 12D 15

Question 6

Identify the mathematical expression that models this word expression.

six less than the quotient of a number and

fourA 6 – n ÷ 4B n/4 + 6C n/4 – 6D 6 – 4/n

Question 7

Solve for J: 4J = 36

A 9B 32C 40D 144

Question 8

Mark wrote the pattern below.10, 15, 20, 25, 30, ___, 40, …

A What is the rule for this pattern?B What is the missing number in the pattern?C The seventh term in the pattern is 40. What are the eighth and ninth terms?

Question 9

Kalmi wrote the following word expression:

five less than a number is equal to seven

A Write a mathematical sentence that models the word sentence above. (let n represent the number)

B Solve Kalmi’s mathematical sentence. Show your work.

Question 10The graph shows the

growth of Sayeed’s plant.

10. A How much does the plant grow in 1 week?

10. B How tall will the plant be after 10 weeks? Explain your reasoning.

Answers

1. B 4.7, 5.42. C 533. B 94. D x = 635. D 156. C n/4 – 67. A 9

Answers

8. A. Add 5 B. 35

C. 45, 50

Answers

9.A. n – 5 = 7

B. n – 5 = 7 + 5 + 5 n = 12

Answers

10. A. ½ cm

10.B. The plant will be over 5 cm tall after 10 weeks. The growth is ½ cm per week.