Chapter 8 Review “Play” or “Fib”

Directions: Each person will receive one index card face down. The card either says “Player” or “Fibber”. A question will be shown and every student will solve it. Each student will go to the card (A,B,C,D) that matches their answer. If you are a “Player”, you do as above. If you are a “Fibber”, you still try to answer the question correctly, but instead of going to the correct letter (A,B,C,D), choose a different letter to purposely mislead others. The cards will be redistributed for the next question.

1. The temperature in a room was 50 degrees before the heater was turned on. The heater can raise the temperature in the room about 1.5 degrees per minute. How many minutes will it take to bring the temperature to 68 degrees? 9 minutes 12 minutes 18 minutes 27 minutes

2. Mr. Saylor’s car used 18 gallons of gasoline to go 468 miles 2. Mr. Saylor’s car used 18 gallons of gasoline to go 468 miles. At that rate, how many gallons would be used to go 754 miles? 286 gallons 26 gallons 1.61 gallons 29 gallons

3. Every time Mr. Erb drives into town he uses 2/3 of a gallon of gasoline. If his car holds 16 gallons of gasoline, how many trips can Mr. Erb take to town?   24 trips 10 2/3 trips 15 1/3 trips 32 trips

4. Mr. Erb’s car holds 16 gallons of gas 4. Mr. Erb’s car holds 16 gallons of gas. If his car uses x gallons of gasoline into town, which expression shows how many trips can he take into town? 16 ÷ x 16  x 16 – x X ÷ 16

5. An airplane is flying at an elevation of 20,000 feet and descends (goes down) at a rate of 325 feet per minute for 8 minutes. What is the new elevation of the airplane and how do you know? 2,600 feet 19, 675 feet 17,400 feet 26,600 feet

6. Simplify the expressions below by combining like terms 6. Simplify the expressions below by combining like terms. Use algebra tiles if necessary. 4x2 + 3(x + 2) + 5x + 1 4x2 + 3x + 6 + 5x + 1 4x2 + 3x + 7 + 5x 4x2 + 8x + 7 4x2 + 8x + 3

7. Using the algebra tiles below, find the perimeter. 3x + 7 4x + 6 4x + 7

8. Evaluate the expression below if x = 4. 2x2 + 5(x + 2) – 3x 74 50 34 86

9. Mary Poppins traveled 2 miles in 20 minutes on her bike 9. Mary Poppins traveled 2 miles in 20 minutes on her bike. She went the same speed for an additional hour. How far did she travel during the entire hour and 20 minutes? 4 miles 5 miles 6 miles 8 miles

10. The stem-and-leaf plot below shows the ages of people at the Wilkin’s family reunion. What is the median and range of the ages? 43 and 64 48 and 70 45.5 and 70 45.5 and 64

11. On her vacation, Suzie read the following number of pages each day: 15, 39, 23, 24, 12, 43, 25, 52, 26 Create a box plot to find the Interquartile Range (IQR). 52 – 12 = 40 41 – 25 = 16 41 – 19 = 22 39 – 23 = 15

12. A store clerk was asked to keep track of the costs of shoes that were bought while she was working. She made the box and whisker plot below. Based on the box plot, what quartile has the largest range of prices in it? 1st quartile 2nd quartile 3rd quartile 4th quartile

13. Claudia has an after-school job at Jo-Jo’s Pizza 13. Claudia has an after-school job at Jo-Jo’s Pizza. Her boss keeps track of how many pizzas she sells each day. During her last five days of work, she served 29, 24, 15, 35, and 22 pizzas. What is the the Mean Absolute Deviation for this data? 5.6 28 5 20

14. The Smith and William’s families both have 6 people 14. The Smith and William’s families both have 6 people. They compared the mean and Mean Absolute Deviation of their ages. The results are below. Smith’s mean – 23.8 William’s mean – 24.2 Smith’s M.A.D. – 16.6 William’s M.A.D. – 15.6 What does the above information tell you about the two families? The Smith family consists of people mostly in their 20’s. There is a greater range of ages in the William’s family. The Smith family has a wider range of ages from the mean. The William’s family has the oldest person between both families.