$9.79 + 7% t a x = $9.79 + 7% ⋅ $9.79 = $9.79 + 0.07 ⋅ $9.79 = = $9.79 + $0.6853 = $10.4753 ≈ $10.48
To calculate the total cost of an item priced at $9.79 with a 7% tax, multiply the price by the tax rate to find the sales tax. Then, add the sales tax to the original price, resulting in a total of approximately $10.48 after rounding. This method can be applied to any item by adjusting the price and tax rate accordingly.
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