X 5 19 33 47 y -1 -6 -36 -216 is this relationship linear exponential or neither

With #! i’ve tried to figure it out but i can’t.

What are “like terms”? why can we only add like terms?

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