Question

The cost of going to the big playland park for a family is given by C = 15x + 50, where C represents the cost and x represents the number of family members. How many family members went if it cost them $125?

Answer 1

cost = 15x+50
cost=125
15x+50=125
15x=75
x=75/15
x=5
so the number of members=5