(1 point) Consider the function f(x) = _. 4 + 8. In this problem you will calculate x2 4 + 8) dx by using the definition n f(x) dx = lim E f( x: ) Ax a n- co 1= 1 The summation inside the brackets is R, which is the Riemann sum where the sample points are chosen to be the right-hand endpoints of each sub- interval. Calculate Rn for f(x) = - + 8 on the interval [0, 3] and write your answer as a function of n without any summation signs. Hint: Rn = lim Rn = 87/4 1 -+ 0o