Find the fourth term of the geometric sequence, given the first term and common ratio.
a1=8 and r=4

Me answer number 3plz explain how you do it

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.

Can someone me with the property questions for 12 13 and 14 plz