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7 May, 00:13

Jamie has saved $42 of her allowance money to buy books. If she buys 5 books at d dollars per book, she will have 42-5d of her allowance left. How much does she have left if the books cost $3.50 each?

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  1. 7 May, 00:45
    0
    First, you plug in 3.50 for d. Then, you multiply 5 and 3.50 and get 17.50. After that, you subtract 17.50 from 42, and you get 24.50. That means that Jamie will have $24.50 of her allowance left.
  2. 7 May, 03:22
    0
    42 - 5d

    42 - 5 (3.50)

    42 - 17.5

    $34.50

    She has $34.50 left
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