Im giving all my points for this i need it done quickly

Find the cosine function that is represented in the graph.

Witch represents the inverse of the function f(x)=1/4x-12

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.