Suppose that the integral I = (a) Determine b. f(x) da can be represented by the following Riemann sum using right endpoints and ni subintervals: 49 (A) 2 2 2 7 7 7n 7 49 + 49 n n n n n n (b) Determine f(x). f(x) = (c) Evaluate the integral by interpreting it in terms of areas. I Note: You can earn partial credit on this problem.