Need the answer for all of them

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?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Aline segment is different from a line in that a segment has