Find the missing measurements in the shape ​

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

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)