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26 May, 00:43

A pair of shoes costs $52.99 and the state sales tax is 8%. Use the formula C = p + rp to find the total cost of the shoes, where C is the total cost, p is the price, and r is the sales tax rate.

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  1. 26 May, 04:13
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    The pair of shoes costs $52.99, so p = 52.99.

    The state sales tax is 8%, which can be changed to decimal form by dividing by 100: 8/100 = 0.08. So r = 0.08.

    Now you can plug both of these values into the formula to find the total cost of the shoes (c):

    c = p + r*p

    c = 52.99 + (0.08) * (52.99)

    c = 52.99 + 4.2392

    c = 57.2292

    So the total cost of the shoes is $57.23
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