Find the trapezoidal Riemann sum approximation of fx+3dx using four equal partitions. (10 points) (0.5)[f(1) + f(5)] + f(2) + f(3) + f(4) Of(1) + f(5) + (0.5)[f(2) + f(3) + f(4)] f(1) + f(2) + f(3) + f(4) + f(5) (0.5)[f(1) + f(2) + f(3) + f(4) + f(5)] A piecewise function made up of a triangle, a rectangle, and a semicircle is shown. 10 8 6 4 2 -14 -12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12 14 16 18 -2 -4 -6 -8 -10 Find the accumulation of change under the curve from x = -10 to x = 10 using geometric formulas. (10 points)