Question

a student received a coupon for 20% off the total purchase price at a clothing store. let d be the original price of the purchase. use the expression below for the new price of the purchase. write an equivalent expression by combining like terms. d - 0.2d d - 0.2d = \square

Explanation:

Step1: Identify like terms

The terms \( d \) and \( -0.2d \) are like terms (both have the variable \( d \)).

Step2: Combine like terms

Factor out \( d \): \( d - 0.2d=(1 - 0.2)d \)
Calculate \( 1 - 0.2 = 0.8 \), so \( (1 - 0.2)d = 0.8d \)

Answer:

\( 0.8d \)