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

Step-by-step 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