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 story

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 expression to determine the regular price of the book to the nearest cent.

equation:

regular price of book:

plss i dont understand how to do this ; -; . if you answer explain how you got your answer.