Which statement best describes why this set of ordered pairs is not a function? {(1, 5),(2, 6),(3, 6),(4, 1),(4, 20),(5, 21),(6, 24

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?