At a jazz club, the cost of an evening is based on a cover charge of $15 plus a beverage charge of $7 per drink.

(a) Find a formula for , the total cost for an evening in which drinks are consumed.

(b) If the price of the cover charge is raised by $5, express the new total cost function, , as a transformation of .

Note: Do not give an explicit formula. Using function notation, write an expression for by performing the necessary transformations to . For example your answer should be of the form, and not of the form .

(c) The management increases the cover charge to $35, leaves the price of a drink at $7, but includes the first three drinks for free. For , express , the new total cost, as a transformation of .

(see note in (b) above for the correct way to express your answer)

You can earn partial credit on this problem.