First, we need to calculate the discounted price of the album. The album is priced at $15.00 with a 20% discount.
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Calculate the discount amount: \[ \text{Discount} = 15.00 \times 0.20 = 3.00 \]
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Subtract the discount from the original price to find the sale price: \[ \text{Sale Price} = 15.00 - 3.00 = 12.00 \]
Next, we will calculate the sales tax on the sale price. The sales tax rate is 6%.
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Calculate the sales tax: \[ \text{Sales Tax} = 12.00 \times 0.06 = 0.72 \]
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Add the sales tax to the sale price to find the total price: \[ \text{Total Price} = 12.00 + 0.72 = 12.72 \]
Thus, the total price of the album including tax is $12.72.
The correct answer is C. $12.72.