Answer: $143.10 is the final price
Explanation:
First you do $150.00 * 0.10 (This is the percent converted to a decimal)
This equals 15, so 10% off would be $15, subtract $15 from his total since a coupon will save you money!
150-15= 135, since he must pay sales tax of 6%, you must multiply by 0.06, which equals 8.1 (or $8.10)
$135 (the price with the coupon) + $8.10 (The sales tax) = $143.10
Hope this helps!