Find the surface jenna haik 3/8 mile and 1/4 hour. how fast did she hike in miles per hour?

If you meant to state that Jenna hiked 3/8 mile in 1/4 hour, then we can convert that to miles per hour:

3
-- mile
8
= (3/8) / (1/4) mph = 12/8 mph, or 3/2 mph, or 1.5 mph (answer)
1
-- hour
4

You didn’t put the necessary image to solve the question : p