Answer:
(1 - 0.2)s.
Step-by-step explanation:
It is given that a store is offering 20% off all shoes. Rosalie purchases shoes and clothes.
The expression representing her total cost (including 7% tax) is
c + (1 - 0.2)s + 0.07[c+ (1 - 0.2)s].
Here,
c = Cost of clothes
s = Cost of shoes
(1 - 0.2)s = cost of the shoes after the 20% discount.
0.07[c+ (1 - 0.2)s] = Amount of tax on total purchase of shoes and clothes.
Therefore, (1 - 0.2)s term represents the cost of the shoes after the discount.
