For [(x) : x4 , 4x3 + 8 nd the following (A) f'(X) (B) The slope of the graph of l at x ' v 2 (C) The equation of the tangent line at x : 2 (D) The value(s) of x where the tangent line is horizontal _ 6' The total sales of a company (in millions of dollais) t months from now are given by 50) : U 0213 + 0 8!2 + 21+ 4 (A) Find S'(t) ' (8) Find 8(3) and S'(3) (to two decimal places) (C) Interpret S(11)=149 42 and S'(11):26 86 ' an example Get more help . '\\ r2 .- . :m A at mastic-n F.- Inn