A continuously-decreasing function that is concave up on the interval [2, 6] is represented by the table. 3.3 4.4 5.5 f(x) 0.5 0.303 0.227 0.182 0.167 Part A: Find the left Reimann sum estimate of f(x)dx, based on the subintervals given in the table. Part B: Write the midpoint Reimann sum that estimates "f(x)dx, based on the subintervals given in the table. Part C: Determine whether the left Reimann sum estimate is an overestimate or an underestimate, based on the properties of the function.

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