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31 October, 17:13

Ryan works mowing lawns and babysitting. He earns $8.20 an hour for mowing and $7.70 an hour for babysitting. How much will he earn for 3 hours of mowing and 7hours of babysitting?

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  1. 31 October, 17:56
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    Step-by-step explanation:

    Ryan works mowing lawns and babysitting. He earns $8.20 an hour for mowing and $7.70 an hour for babysitting. Therefore, the expression for the total amount that he would earn if he mows lawns for x hours and babysits for y hours would be

    8.2x + 7.7y

    Therefore, the amount that he would earn for 3 hours of mowing and 7hours of babysitting is

    (8.2 * 3) + (7.7 * 7)

    = 24.8 + 53.9

    = $78.7
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