Answer:
E) She may take a 3 percent discount if she pays the invoice within ten days.
Explanation:
Net30: net/30 is a type of trade credit where the buyer must pay within 30 days of the purchase. Traders usually offer discounts so that buyer pays the amount earlier than the time of payment.
Example: Notation 3/10 on the invoice means the customer will be given 3% discount if he/she pays within 10 days.