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Yoko earns 48 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 Yoko 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 Yoko earns if she sells 21 books.

Answer :

Answer:

$69

Step-by-step explanation:

48 + 1B = A

48 + 1(21) = A = 69

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