Pls help me wit this asap

Which property is illustrated by the statement given below? raj raj.

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

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.