7/8 of an hour is 52.5 minutes. 3/10 of 52.5 minutes is 15.75 minutes. They spent 15.75 minutes warming up and cooling down.
Sorry if my handwriting sloppy.
I showed all of it step by step.
i wasn't sure on how to explain it so i just attached ur answer
It’s 3, absolute value makes everything positive
Answer:
c
Step-by-step explanation: