calculus 3: Consider the following table: John Smith 4 years ago 1) Consider the following table: X 0 4 8 12 16 20 /w 57 56 53 47 34 8 20 a) Approximate JQ /(x) dx using a Left Hand Sum with Ax = 4. b) Approximate J02°/(x) dx using a Right Hand Sum with Ax = 4.