Question

A store offers a 15% discount on all items in the store during a sale. All store employees get an additional 10% employee discount. In the equation below, C represents the cost of an item for an employee including tax, and x represents the original price of the item.

C = 0.765x + 0.06(0.765x)

Chris is an employee at the store. He plans to buy a coat during the sale. The price of the coat before the discount is $100. How much will Chris pay for the coat during the sale?

Answer 1

ok, you just have to substitute the 100 for the x, so you have

C = 0.765(100) + 0.060(0.765(100))

Answer 2

SO you have to multiply?

Answer 3

first multiply as follows:

C = 76.50 + 0.060 (76.50)

Answer 4

now multiply again and you have
C = 76.50 + 4.59

Answer 5

now just add

Answer 6

$81.09?

Answer 7

good job