B.If a rabbit can move 7/5 miles every hour, then how many hours would it take for a rabbit to go 7 miles?

It would take 5 hours.

Using the equation d=rt, where d is the distance, r is the rate and t is the time, we have
7 = (7/5)t

Dividing both sides by 7/5, we have
7÷ 7/5 = t
7/1 ÷ 7/5 = t
7/1 × 5/7 = t
(7*5)/(1*7) = t
35/7 = t
5 = t