Question

a plumber charges $55 for a service call, plus $35 per hour. If the plumber bill was $160 ,then how many hours was he there

Answer 1

he was there 3 hours

Explanation:

so you take 160 and subtract 55 from that number

160-55=105

next take 105 and divide that by 35 to get how many hours he was there.

105÷35=3

if you need this in slope intercept for a graph you use the equation where y = the total money spent

y=35x+55