A(b – c) if a = -6, b = 14, and c = 7

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need

How can i differentiate this equation?

Graph the linear equation. find threepoints that solve the equation, then ploton the graph.-x-3y=-6