What does the power rule of exponents say

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?

The tile along the edge of a triangular community pool needs to be replaced? ?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.