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.