rowing machine

  

Elijah is using a rowing machine. The table shows how many Calories he can burn for certain lengths of time. (look at attachment if numbers are messed up on table chart)

Time (min) Calories

2 24

4 48

6 72

8 96

10 120

Which function could be used to describe the number of Calories burned after x minutes?

A. y=12x

B. xy=12

C. y=12+x

D. X+y=12

What is the range of the function?

A. {0, 12, 24, 36,…}

B. {24, 48, 72,…}

C. y ≥ 0

D. y ≥ 24

Elijah graphed the function in the second problem. Which best describes the graph?

A. It is a line that increases from left to right

B. It forms a U-shape

C. It is a line that decreases from left to right

D. It forms a V-shape