Question

Y = X - ( 20x). What is the sale price if the cereal cost $4.00?

Answer 1

Question:

The grocery store has 20% off from the original price on cereal. The equation for finding the sale price would be y = x - (.20x). What is the sale price if the cereal cost $4.00?

Answer:

The sales price is $3.20

Explanation:

Given

`y = Sales\ Price`

`x = Cost`

`y = x - (0.20x)`

Required

Determine y when x = 4.00

To do this, we simply substitute 4.00 for x in
`y = x - (0.20x)`

`y = 4.00 - (0.20 * 4.00)`

`y = 4.00 - 0.80`

`y = 3.20`

Hence, the sales price is $3.20