Write 144 an exponent by using 12 as the base

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

How many lines can be drawn through points j and k? 0 1 2 3

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.