Simplify the expression
4y+1-3y+2

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 answer is 7.2 how would you put this as money

The slope of the line passing through the points (2, 7) and (-4, 8) is