Mustafa and Diego both work as plumbers. Mustafa charges $150 to mak a service call plus $50 per hour. Diego charges $50 to make a service call plus $75 per hour. a) Write an equation to represent the cost (C) of hiring Mustafa for n hours.
b) Write an equation to represent the cost (C) of hiring Diego for n hours.
c) Today, they both worked the same number of hours and earned the same amount of money. How many hours did they work?