Raina earns 47 dollars each week working part-time at a bookstore. She earns one additional dollar for each book that she sells. Let A be the amount (in dollars) that Raina earns in a week if she sells B books. Write an equation relating A to B. Then use this equation to find the amount of money Raina earns if she sells 12 books.

$564

Step-by-step explanation:

Let A be the amount (in dollars) that Raina earns in a week if she sells B books.

Given: Raina earns 47 dollars each week working part-time at a bookstore.

Total earning = (Earning per book)x (Number of books)

i.e. A = 47B

Put B = 12

A = 47(12) =564

Hence, the amount of money Raina earns if she sells 12 books is $564 .

That's actually pretty useful thanks!

Step-by-step explanation: