Question

Simplify the expression to find the cost when the $5 coupon is applied first. Enter your response in the box. Keep two places after the decimal.
0.9∙(17.52–5)0.9•(17.52–5) =



Simplify the expression to find the cost when the 10% coupon is applied first. Enter your response in the box. Keep two places after the decimal.

0.9∙17.52–50.9•17.52–5 =

Answer 1

Cost when the $5 coupon is applied first:
Cost, C = ($17.52 - $5.00) x 0.9
C = $12.52 x 0.9
C = $11.27
cost when the 10% coupon is applied first
Cost, C = (0.9 x $17.52) - $5.00
C = $15.77 - $5.00
C = $10.77