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Lesson 23 Rate of Change

Lesson 23 Rate of Change. Science – Grade 7 Week of March 17 – 28 Session # 5. Sample Test Questions Question 1. Victoria’s family drove 672 miles in 14 hours. What was the average rate of speed for the trip? A 50 mph B 48 mph C 45 mph D 42 mph. Question 2.

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Lesson 23 Rate of Change

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  1. Lesson 23 Rate of Change Science – Grade 7 Week of March 17 – 28 Session # 5

  2. 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 mph B 48 mph C 45 mph D 42 mph

  3. 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 280 B 470 C 560 D 740

  4. Pie Production

  5. Question 3 The 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 hr B 15 pies per hr C 30 pies per hr D 60 pies per hr

  6. Question 4 Clarissa made 18 gift baskets in 3 hours. How many gift baskets can she make in 5 hours? A 15 B 27 C 30 D 54

  7. Growth of Martha’s Plant H E I G H T I N C H E S

  8. 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 week B 1 in per week C 2 in per week D 5 in per week

  9. Question 6 Carla read 90 pages of her novel in 2 hours. How many pages can she read in 7 hours? A 45 B 315 C 520 D 630

  10. Question 7 Katrina rode a bus that traveled 17 miles every 20 minutes. The bus stayed at a constant speed for the entire trip. • Hour far does the bus travel in 1 hour? _____ • Haw far will the bus travel in 1 ½ hours? _____

  11. ANSWERS • B 48 MPH • C 560 • B 15 pies per hour • C 30 • B 1 inch per week • B 315 • A. 51 miles B. 76.5 miles

  12. 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, 4.9 B 4.7, 5.4 C 4.7, 5.7 D 5.2, 5.9

  13. Question 2 What is the missing number in this pattern? 60, 58, 56, 54, ___, 50, … A 59 B 53 C 52 D 51

  14. Question 3 Solve for x: 8x = 72 A 8 B 9 C 10 D 11

  15. Question 4 What is the solution of this equation? x – 8 = 55 A x = 42 B x = 47 C x = 58 D x = 63

  16. Question 5 Kimberly writes 6 pages every 2 hours. At this rate, how many pages can Kimberly write in 5 hours? A 4 B 8 C 12 D 15

  17. Question 6 Identify the mathematical expression that models this word expression. six less than the quotient of a number and four A 6 – n ÷ 4 B n/4 + 6 C n/4 – 6 D 6 – 4/n

  18. Question 7 Solve for J: 4J = 36 A 9 B 32 C 40 D 144

  19. 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?

  20. 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.

  21. Question 10 The graph shows the growth of Sayeed’s plant.

  22. 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.

  23. Answers • B 4.7, 5.4 • C 53 • B 9 • D x = 63 • D 15 • C n/4 – 6 • A 9

  24. Answers 8. A. Add 5 B. 35 C. 45, 50

  25. Answers 9.A. n – 5 = 7 B. n – 5 = 7 + 5 + 5 n = 12

  26. 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.

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