Answer:
The discount on the skateboard is 12% of its original price, so the discounted price is:
Discounted price = $79.28 - 0.12($79.28) = $69.78
Now we need to calculate the sales tax on the discounted price. The sales tax rate is 8.25%, so the amount of sales tax is:
Sales tax = 0.0825($69.78) = $5.76
Adding the discounted price and the sales tax, we get the total cost of the skateboard:
Total cost = $69.78 + $5.76 = $75.54
Therefore, the total cost of the skateboard, including the discount and sales tax, is $75.54.