Use this definition with right endpoints to find an expression for the area under the graph of f as a limit. Do not evaluate the limit. f ( x ) = 8 + sin2( x), Os XSn A = lim n - 00 i = 1 A table of values of an increasing function f is shown. X 10 14 18 22 26 30 f(x ) -15 -6 -3 1 4 8 30 Use the table to find lower and upper estimates for 10 f(x) dx. (Use five equal subintervals.) lower estimate upper estimate