Question

Save You More offers a buy one/get one free item each week. Customers who purchase only one of the items must pay the regular price. The limit is one deal per customer. Is the relation (# sale items purchased, price) a function? Why or why not? A) It is a function because the input can be either 1 or 2 items, but the output will always be the same price. B) It is not a function because the input can be either 1 or 2 items, but the output will always be the same price. C) It is a function because the input will always be the same price, but the output can be either one or two items. D) It is not a function because the input will always be the same price, but the output can be either one or two items.

Answer 1

B

Explanation:

Since a function would mean that a customer is able to purchase 1.1 of an item or 1.5 of an item, which is false. It also means that the customers pay the same price for a different amount of items.

Answer 2

Answer: The answer is A

It is a function because the input can be either 1 or 2 items, but the output will always be the same price.

According to the stated relation, (# sale items purchased, price), the input is the number of sale items purchased and the output is the price. The input values of a function can be different and have the same output value. However, a function cannot have different outputs for the same input.