Question

kerri and james practiced for the school track meet. kerri completed 8 laps in 16 minutes. if james ran at the same rate, how many minutes did it take him to run 5 laps? use the tape diagram shown.

suri purchased some paint and paintbrushes to paint her hallway. the expression \\(12.5b + 6(10 + b)\\) represents the total cost, in dollars, in terms of the number of paintbrushes, \\(b\\), she bought. what is the value of the expression when \\(b = 4\\)?

the histogram below represents the number of minutes a random sample of seventh graders spent watching television the previous day.
a. the total number of students surveyed is ______.
b. the number of students who watched more than 30 minutes of television is ______.
c. there are exactly 10 students who watched ____________________ minutes of television.
d. what percent of students watch 16-30 minutes of tv a day?

Explanation:

Calculate James's running time using unit rates

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$$

Evaluate the algebraic expression for Suri's cost

$$
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$$

Analyze the histogram data

$$
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$$

Answer:

Question 1

It took James 10 minutes to run 5 laps.

Question 2

The value of the expression when \(b = 4\) is 134.

Question 3

a. The total number of students surveyed is <blank>80</blank>.
b. The number of students who watched more than 30 minutes of television is <blank>55</blank>.
c. There are exactly 10 students who watched <blank>more than 60</blank> minutes of television.
d. What percent of students watch 16-30 minutes of TV a day? <blank>25%</blank>