Set up an equation and solve for x

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.

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

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6