HELP ME PLEASE i don't know how to do this

Twenty points. suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

How do you do the foil method with polynomials?