A plumber charges $50 for every house call and an additional $70 for each hour of work. For one house call yesterday, the plumber earned $435.
Which equation can be solved to find the number of hours the plumber worked on the house call?
A. 435=70x +50
B. 435 (50+70)x
C. 435=(x+70)+ 50
D.435=50x+70
The plumber charges $50 for every house call and an additional $70 for each hour of work. To find the total amount the plumber earned, we need to multiply the number of hours worked by $70 and add this amount to the $50 charge for the house call. This can be represented by the equation:
Total earnings = $435 = $50 + $70x
Therefore, the correct equation is:
A. 435 = 70x + 50