For each problem, use a left-hand Riemann sum to approximate the integral based off of the values in the table. 6 ) [ Me ) de X 0 5 6 7 8 0 5 6 10 x) 3 2 1 0 -1 -3 Evaluate each definite integral using the two a substitution methods learned in class. de; " - 3x + 2 10 (24 4 +3 ) : 2x 11) 12x (2x2 4 2)2 dx For each problem, find the average value of the function over the given interval. 12) (x) =-x + 3; [-3, -2] 13 ) 1 ( x ) -2 -52: [-4, -1) For each problem, find the area under the curve over the given interval. - 7 [24) 15) y - 2x + 4x + 4: [-3, 1]