Marina volunteers at the salvation army. she has been tasked with buying non-perishable items for families that were displaced

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.

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

Aright triangle has an area of 21 m2. the dimensions of the triangle are increased by a scale factor of 4. what is the area of the new triangle