\fKI Often sales of a new.r product grow rapidly at rst and then level off with time. This is the case with the sales represented by the function S(t)=100 50m _1 . wheret represents time In years. Find the rate ofchange ofsales for the following number ofyears. a- 3 years The rate of change in sales after 3 years is E. {Type an integer or decimal rounded to the nearest thousandth as needed.) b. 6 years The rate of change in sales after 6 years is _ {Type an integer or decimal rounded to the nearest thousandth as needed.) Find the equation of the tangent line at the given point on the following curve. yz = 41, ( - 4,5) The equation of the tangent line to the point ( - 4,5) is y =