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?

Step-by-step 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.

2.14x - 12.18 = -5.76

add 12.18 to each side

2.14x -12.18 +12.18 = -5.76 +12.18

2.14 x =6.42

divide by 2.14

2.14x/2.14 = 6.42/2.14

x=3