I am not sure how to do this question

(1 point) Consider the function f (x) = * +6. -2 In this problem you will calculate / 4 + 6) dx by using the definition S(x) dx = lim 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 R, for f(x) = - + 6 on the interval [0, 4] and write your answer as a function of n without any summation signs. R. = lim R. =