Somebody please help me out !! (Theres a photo attached)

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

Y+ 2/y is it a polynomial in one variable or not? and if so, why?

Me i'm timed right now! a. (0,-5)b. (0,-3)c. (0,3) d. (0,5)