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Approximate the area under the graph of f(x=0.02x4 -- 1.212+ 65 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)=0.02x4- 1.212 65 over the interval [3,11] is approximately (Simplify your answer. Type an integer or a decimal.)