Question

A plumber charges $15 for a service call plus $20 per hour of service. Write an equation in slope-intercept form for the cost, y, after x hours of service. What will be the total cost for 8 hours of work?

Select the correct equation and solution (you should pick two answers.)

Y=15x + 20
Y= 20x + 15
140 dollars
175 dollars

Answer 1

Y=20x+15 & 175 dollars

Explanation:

The word problems says $20 per hour, so that means 20 times the amount of hours. If yo multiply 20 times 8 you get 160. Add 15 to 160, you end up with $175.