Do the points p(1,-3), q(2,1) and r(2.5,3) lie on the same straight line

Which of the following graphs represents the function f(x) = 2^x

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

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.