K Approximate the area under the graph of f(x) = 0.02x* - 1.21x"+ 72 over the interval [3,11] by dividing the interval into 4 subintervals. Use the left endpoint of each subinterval. The area under the graph of f(x) = 0.02x* - 1.21x+ 72 over the interval [3, 11] is approximately. (Simplify your answer. Type an integer or a decimal.) Time Remaining: 00:42:01 Next DII DD 20 Q F12 F10 F11 F3 F4 F6 F7 F8 F9 F1 F2 F5