Guided Practice The equation s = p – 0.15p represents the sale price s of an item with an original price p, after a 15% discount. A T-shirt costs $12. What is the sale price?

A.
$142.20

B.
$11.85

C.
$13.80

D.
$10.20

THE ANSWER IS NOT: B.
$11.85

Substitute for p and solve for s.

s==p−0.15p12−0.15(12)

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