# math calculus

posted by
**steven** on
.

The marginal cost of a product is modeled by

dC/dx= 16/cube root 16x + 3

where x is the number of units. When x = 17, C = 120.

(a) Find the cost function. (Round your constant term to two decimal places.)

c=

(b) Find the cost of producing 90 units. (Round your answer to two decimal places.)

$