Which of the following are situations that can be modeled with a quadratic function? Select all that apply.

Use the distributive law to multiply. 3(4x + 5y + 6)

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total