For any linear function f(x) = mx + b, when does 5f(x) = f(5x) + 5?

Franco wants to double the volume of the cone. what should he do?

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

Is it greater than or less than7*3_9*2