A vendor opens a small booth at a supermarket to offer customers a taste of a new

Question:

A vendor opens a small booth at a supermarket to offer customers a taste of a new beverage. The staff at the booth offer the beverage to adults who pass through the soda aisle of the store near a display of the product. Customers who react favorably receive a discount toward future purchases.
Coupon
A coupon or coupon payment is the annual interest rate paid on a bond, expressed as a percentage of the face value and paid from issue date until maturity. Coupons are usually referred to in terms of the coupon rate (the sum of coupons paid in a...