Answer:
$22.50 (With $2.50 left)
Step-by-step explanation:
Well, I multiplied 3.75, and 3 and 11.25 came out of it since Mike and friend both need a paddleboard for 3 hours I multiplied 11.25 by 2 and the result was 22.50. Mike will also have $2.50 left.
I hope this helped.