Answer:
Luis paid $75.44
Explanation:
First we need to find how much he paid after the discount. To do so, we need to find the amount of the discount, which we can do by multiplying the discount amount by the price.
$79.56 * 12% = $9.55
Now we subtract that from the cost.
$79.56 - $9.55 = $70.01
Next, find the sales tax on the new price of the skateboard, by multiplying the new cost by the percentage.
$70.01 * 7.75% = $5.43
Now we add that amount to the amount he paid.
$70.01 + $5.43 = $75.44