Which of the following gives the area under the graph of y=7 x for from x=2 to x=5 using 3 approximating rectangles and right endpoints? O None of the others. O 87 83 85 O 84 11 if S" f(x)dx= 11 and , S f(x)dx=7 then what is the result of S" , f(x)dx? 3 O None of the others. O 4 O 7 O 5 O 3 What is the area under the curve y=1 x2 for 0