Question

1. A plumber charges $50 for a house call in addition to $80

per hour worked. Which equation represents y, the total cost
for x, hours worked?

Answer 1

Explanation:

Since the plumber charges $50 regardless of how many hours he works, then the equation must be 50 + ....

Since the plumber charges $80 for each hour, then the equation will be y = 50 + 80x.