Approximate the area under the graph of f(x) =0.05x*- 1 21x2+ 46 over the interval [2,6] by dividing the interval into 4 subintervals. Use the left endpoint of each subinterval. The area under the graph of f(x) =0.05x - 1.21x + 46 over the interval [2,6] is approximately (Simplify your answer. Type an integer or a decimal.)