Question

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. During what domain interval will she reach 1.25 miles?



(1 point)
Responses

5≤s<125≤s<12

22.5≤s≤2522.5≤s≤25

12≤s≤15
12≤s≤15

15≤s≤22.5 15≤s≤22.5

Answer 1

15 ≤ s ≤ 22.5

She hasn't reached 1.25 miles by the end of her first two runs (first 12 minutes) and finishes 2 miles at 22.5 minutes, so the 1.25-mile mark is reached during her final 7.5-minute run (from minute 15 to minute 22.5).