350 slices of pizza are eaten per second in the united states. how many are eaten per hour? (hint there are 3,600 seconds per hour) explain to me how to do this.

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