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7 November, 00:41

Grace earns $7 for each car she washes. She always saves $22 of her weekly earnings. This week, she wants to have at least $63 in spending money. How many cars must she wash? Enter and solve an inequality to represent this situation. Enter your value as a simplified mixed number, if necessary.

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  1. 7 November, 01:33
    0
    Answer: 12 1/7 cars

    Step-by-step explanation:

    Let the number of cars she'd wash to earn $63 in spending money be A.

    Given she saves $22 of her weekly earnings and wants to have at least $63 for spending money.

    That means she'd have to make $63 + $22 = $85

    The expression is thus

    $85 = A x $7

    Where A is the number of cars and $7 is the amount she earns for washing one car and $85 is the total amount she has to make.

    Therefore,

    85 = A x 7

    Divide both sides by 7

    85/7 = A x 7/7

    12 1/7 = A

    A = 12 1/7 cars

    She must wash 12 1/7 cars to have at least $63 spending money and also have her weekly Savings of $22.
  2. 7 November, 02:21
    0
    12 1/7 cars

    Step-by-step explanation:

    Let the number of cars she'd wash to earn $63 in spending money be A.

    Given she saves $22 of her weekly earnings and wants to have at least $63 for spending money.

    That means she'd have to make $63 + $22 = $85

    The expression is thus

    $85 = A x $7

    Where A is the number of cars and $7 is the amount she earns for washing one car and $85 is the total amount she has to make.

    Therefore,

    85 = A x 7

    Divide both sides by 7

    85/7 = A x 7/7

    12 1/7 = A

    A = 12 1/7 cars

    She must wash 12 1/7 cars to have at least $63 spending money and also have her weekly Savings of $22
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