1. A farmer wants to fence in an area of 1.5 million square feet in a rectangular field and then divide it in half with a fence parallel to one of the sides of the rectangle. How can he do this so as to minimize the cost of the fence? 2. Without using a calculator, sketch the graphs of the functions defined below. a) f(x) = 3x3- 212 +5 b) f (x) = 12 - 1 c) f(x) = sin + V3 cosx, -2n S IS 2x 3. Find the greatest volume that a right circular cylinder can have if it is inscribed in a sphere of radius r