The following function is negative on the given interval f(x) = -4-x ; [2,6] a. Sketch the function on the given interval. b. Approximate the net area bounded by the graph of f and the x-axis on the a. Choose the correct graph below. O A. 228- 10 b. The approximate net area using a left Riemann sum is (Type an integer or a decimal.) The approximate net area using a midpoint Riemann sum is (Type an integer or a decimal.) The approximate net area using a right Riemann sum is (Type an integer or a decimal.)