Question

The cost of a Whoppie Burger is $2.75 and a Whoppie Jr. Burger is $1.00. If 32 total burgers are ordered for a class, find the function denoting total cost, C(x) for all the burgers, where x is the number of Whoppie Jr. Burgers ordered.

a. C(x) = 32 + 3.75x
b. C(x) = 32 + 2.75x
c. C(x) = 88 - 1.75x
d. C(x) = 88 - 3.75x
e. None of the above

Answer 1

c. C(x) = 88 - 1.75x

Explanation:

Since x is the number of Jr burgers ordered, 32-x is the number of more expensive burgers ordered.

The total expense is ...

C(x) = 1.00x + 2.75(32 -x)

C(x) = 88.00 -1.75x . . . . . . . simplify. Matches choice C.