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12 October, 18:18

Simplify each expression and identify the units you and two friends all have the same real meal for lunch. Each meal costs c dollars plus a tax of 6% of the cost and a tip of 20% of the cost. You use a $10 gift certificate. You can represent the total cost with the expression 3c + (0.06+0.20) (3c) - 10

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  1. 12 October, 18:34
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    T. C = 3c + (0.06+0.20) (3c) - 10

    3c = cost of 3 meals

    3c (0.06 + 0.20) = tax and tip expenses

    10 = value of gift certificate

    T. C = 3c + 0.26*3c - 10 = 3.78c - 10.
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