You're supposed to simplify these, but for the last one, isn't it simplified enough?

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

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?