The price p of a gym’s membership is $30 for an enrollment fee and $12 per week w to be a member. W

The price p of a gym’s membership is $30 for an enrollment fee and $12 per week w to be a member. What is the cost to be a member for 5 weeks?

Set up the cost function C(w)
C(w) = 12w + 30

The problem asks for C(5)
C(5) = 12(5) + 30
C(5) = 60 + 30
C(5) = 90