Estimate the area under the graph of f (x) over the interval [3, 8] using ten approximative rectangles and right endpoints as sample points. Rn Repeat the approximation using left endpoints as sample points. In = Repeat the approximation using midpoint as sample points. Mn = Report answers accurate to 4 places. Remember not to round too early in your calculations.Estimate the area under the graph of f(a) - ac + 6 over the interval [0, 12] using 10 approximative rectangles and midpoints as sample points. M10 = Repeat the approximation using using 50 approximationg rectangles. M50 = Repeat the approximation using using 100 approximationg rectangles. M100 = Repeat the approximation using using 500 approximationg rectangles. M500 = These consecutive approximations appear to be approaching what value? So, it appears that the following integral expression is valid: dx = Report any numerical answers accurate to 6 places. Remember not to round too early in your calculations.Evaluate by interpreting as the area of a geometric figure (draw the figure and use geometric formula(s) to evaluate): (14 - 2x) dx =Evaluate by interpreting as the area of a geometric figure (draw the figure and use geometric formula(s) to evaluate): 6 x - 4|dx =If - 25 f(x) dx - 13 -52 and -25 g(x ) dx - 30 52 and 25 h(x) dx - 23 -52 what does the following integral equal? - 25 [9f(x) + 3g(x) - h(x)]dx = -52