Question

The cost in dollars (in dollars) of making x flip flops is represented by 40+4x. The cost (in dollars) of making x sandals is represented by 70+8x. a. Write a polynomial that represents the total cost of making x sandals and x flip flops. b. What is the total cost of making 15 sandals and 15 flip flops?

Answer 1

a. C = 12x + 110; b. $290

Explanation:

a. The polynomial

Let L = cost of flip-flops

and S = cost of sandals

Then

C = L + S

= 40 + 4x + 70 + 8x

= 12x + 110

b. The cost

C = 12 × 15 + 110

= 180 + 110

= $290

The cost of making 15 flip-flops and 15 sandals is $290.