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15 November, 06:38

7532 Question 1 of 7 The equation 4x - 45 = y is used to find your profit, y, in dollars from buying $45 of supplies and washing cars for $4 each. What does the x stand for?

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  1. 15 November, 09:16
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    x stands for the number of cars washed with the supplies.

    Step-by-step explanation:

    Given;

    Profit equation; y = 4x - 45

    Price of supplies = $45

    Amount received per car wahed = $4

    From the equation given, we can notice that the higher the value of x the higher the profit generated.

    Since, for washing a car brings $4, 2 car is $8 and so on ... So the value of x is the number of cars washed with the supplies.

    x stands for the number of cars washed with the supplies.

    For example, if we wash 15 cars. x = 15

    y = 4 (15) - 45 = 60 - 45

    y = $15
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