Pennsylvania has a sales tax of 6%. The city of Philadelphia adds an extra local sales tax of 2%. Both taxes apply to the original price of an item. If the shelf price of a bottle of sports drink is $2 in Philadelphia, PA, which expressions can be used to show the total taxes you would expect to pay?

Both taxes are calculated from the original $2 price. You can add the rates first and multiply: $2(0.06 + 0.02) = $0.16, so A works. Or calculate each tax separately and add them: ($2)(0.06) + ($2)(0.02) = $0.12 + $0.04 = $0.16, so D works. B multiplies the tax amounts instead of adding them, and C adds percentages directly to the price.

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