Please help will give lots of points 50!!

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Problem melissa is her dad build a walkway in their backyard. the walkway will be 54 feet long and 1.5 feet wide. the local hardware store sells tiles which are 1.5 by 1.5 feet and come in boxes of 12. how many boxes of tiles do they need?

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.