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?
435=70x+50
435=(50+70)x
435=(x+70)+50
435=50x+70
The correct equation is:
435 = 70x + 50