Question:

Video games sold: x

Revenue function: R(x) = 60x

Cost function: C(x) = 12 + 7x

Profit function: P(x) =

Choices are:    67x+12, 67x-12,  53x+12, 53x-12

Answer:

Thanks for posting the question.

Given the cost function as C(x)= 12+7x

Revenue as R(x)=60x

Profit is revenue – cost 

Profit Function is P(x) = R(x)-C(x) = 60x -(12+7x)= 60x-12-7x

Hence P(x)= 53x-12