Match each expression to its simplified form

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?

3x = 729 solve for x plz . it's urgent. will mark

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)