Answer:
Fourth option
Step-by-step explanation:
Given the expression in the picture:
Apply Power of Power Rule


The left side of the equation option had this in the fourth option so the fourth option is right
I have included a picture. In the picture you will find the work and final answer.
Answer:
35 minutes
Step-by-step explanation:
Take the lastest time and subtract the earliest time
9:45
9:10
------------
:35
35 minutes