Question

On Friday, Kaitlyn went to the park to work out. She started with a slow jog at a constant rate for 5 minutes. She then increased her speed to a faster, constant pace for 7 minutes. She took a 3-minute break, then ran for another 7.5 minutes at a constant pace to finish her 2-mile run. She rested for the remainder of the time. What domain interval shows that Kaitlyn took a rest 1.25 miles away from her starting point?
(1 point)
05≤s<12
◎15<8≤22.5
22.5≤s25
◎12≤8≤15

Answer 1

12 ≤ s ≤ 15

She begins her 3-minute break after 5 + 7 = 12 minutes and is stationary until 15 minutes, so for every s in [12,15] she is resting 1.25 miles from the start.