Answer :
First find the reduce price (based on the 10% sale - i.e this means if the cost is reduced to 90% of its original non-sale price)
Then subtract another $75 due to the coupon to obtain the end cost:
$575.25*(1-0.10) - $75 = $442.73
Answer is: $442.73
Then subtract another $75 due to the coupon to obtain the end cost:
$575.25*(1-0.10) - $75 = $442.73
Answer is: $442.73