I believe the answer is 6x-7y=-11
3.14 on the length. but if you add to a graph send another one to my comment and show me
explanation
F = 
express the equation with F on the left side
3F - 24 = s ( add 24 to both sides )
3F = s + 24 ( divide both sides by 3 )
F = 
500=140+40h
minus 140 both sides
360=40h
divide y 40
9=h
9 hours
Answer:
26
Step-by-step explanation: