Answer:
4. $36.38
Explanation:
$40.00 * 15% (0.15) = $6.00 <-- how much is the discount is
or $40.00 * (0.85) = $34.00 <-- how much you pay after the discount is applied
$34.00 * 7% (0.07) = $2.38 <-- total amount of tax being paid
$34.00 + $2.38 = $36.38
4. $36.38