Identify what number property is shown for each statment THE OTHER PICTURE IN COMMENTS

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

How do i do this activity, is appreciated

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.