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)