Answer:
$23.13
Explanation:
The subtotal of the books before the discount is $25. To calculate the value, you multiply $25 by 12% (0.12), which equals $3. So the total cost of the books after the discount is $25 - $3 = $22.
Next, to calculate the cost of the books, including the state sales tax, you would multiply $22 by 7.5% (0.075), which equals $1.65.
Therefore, the total cost of the books, including the state sales tax is $22 + $1.65 = $23.65