Question

Solve:

The total cost (C) in dollars of a monthly cable bill for n movies
ordered is given by the function C(n) = 30 +5.50n.
If the total cost was $79.60, how many movies were rented?
09
467
20

Answer 1

Explanation:

C(n) = 30 + 5.50n

if the total cost was 79.60....so sub in 79.60 in for C(n)

79.60 = 30 + 5.50n

79.60 - 30 = 5.50n

49.60 = 5.50n

49.60 / 5.50 = n

9.018 = n <====