Question

All books in a store are being discounted by 30%

PART A:
let x represent the regular price of any book in the store. write an expression that can be used to find the sale price of any book in the store.
EXPRESSION:

PART B:
Jerome bought a book on sale at the store. the sale price of the book was $8.96. write and solve an equation to determine the regular price of the book to the nearest cent.
EXPRESSION:

REGULAR PRICE OF THE BOOK:

Answer 1

Part A:

X - (X*D) = S

S= Sale Price
X= Original Price
D= Discount

Part B:

S = X - XD

S= Sale Price
X= Original Price
D= Discount

8.96 = X - X(.30)
8.96 = X(1 - .30)
8.96 = X(.7)
Divide Both Sides By .7
12.8 = X