Pls help. Homework due in 20 minutes.

Work through the following steps to evaluate (202 + 72 + 3) da. a) We know that a = 3 - of and b = 8 - of b) Using n subintervals, Ax = c) Assume that the sample points in each interval are right endpoints. Find the following sample points: C1 3+ 2 = 3+ - 10 n 3+ 15 n In general, the ith sample point is Ci = 3+ 52 Note: your answer will be an expression in terms of i and n. d) Now find the sum of the areas of n approximation rectangles. Note: your answer will be an expression in terms of n. E f ( zi ) Ax = i -1 125 (n + 1) (2n + 1) 325 n + 1 + 165 6 n2 2 n e) Finally, find the exact value of the integral by letting the number of rectangles approach infinity