What's the solution to this problem?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Pranza plotted point a in the coordinate plane below.

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