At hoffman's bike rentals, it costs $38 to rent a bike for 7 hours. how many dollars does it cost per hour of bike use

For this question, all you need to do is divide dollar amount by the amount of hours. 

38/7= $5.42857 per an hour of bike usage

My
$5.43 (rounded to the nearest hundreths place) per an hour of bike usage

Make sense? Any questions?

On monday,mrs.wise bought 3 lbs of apples at $4per lb= 4*3=$12on tuesday ,20%off and she buy 5 lbs of apples = $4-20%=3.20*5lb=$16example: other wise when she buy 5lbs on monday she have to spend 4*5=20