does anyone know the answer to this question? Thank you!

Determine the amount to be paid in full settlement of each of two invoices, (a) and (b), assuming that credit for returns and allowances was received prior to payment and that all invoices were paid with the discount period. b. $ Feedback Check My Work a \& b. Under FOB shipping point, freight is paid by the buyer, while under FOB destination freight is the seller's expense. To determine the amount, first deduct the return before calculating the discount. Then calculate (Purchase - Return - Discount) + applicable freight