What’s the bottom thing for the answer

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

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

Which equation is y = -6x2 + 3x + 2 rewritten in vertex form?