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8 March, 14:37

Gabriela is washing cars. she charges $15 for a car wash. she paid $145 for advertising, and uses $3 worth of cleaning products on each car she washes. when will Gabriela begin to make profit

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  1. 8 March, 15:58
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    145 + 3x < 15x

    145 < 15x - 3x

    145 < 12x

    145/12 < x

    12.083 < x

    she will begin making a profit after 13 cars
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