The quadratic function f(x) has a vertex at (9,8) and opens upward. If g(x)=4(x-8)^2+9, which statement is true

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

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