Question 20 Evaluate the integral by using the limit definition (with right endpoints and subintervals of equal length) of the definite integral. 7x2 dx. Answer the following questions: (a) What is Ax, using n subintervals? AT = (b) What is each ci ? (c) Fill in the blanks for evaluating the definite integral by definition: 7x' dx = lim n->00 = lim n-+00 = Enter an exact value (no decimals)