Question

The graph shows the line steadily increasing, from 0 to 2

25-

2.25

2

1.75

1.5

1.25

1

0.75

0.5

0.25

01 3 5 7 9 11 13 15 17 19 21 23 25

On Friday, Kaitlyn went to the park to work out. She started with a slow jog at a constant rate for five minutes. She then increased her speed to a faster, constant pace for seven minutes. She took a three-minute break, then ran for
another 7.5 minutes at a constant pace to finish her two-mile run. She rested for the remainder of the time.

(2 points)

During what domain interval will she be at 1.25 miles?

Answer 1

She reaches 1.25 miles at the end of the first two runs (5 + 7 = 12 minutes) and stays there during her 3-minute break.

Domain interval: [12, 15] minutes.