Jerry N.

asked • 03/10/21

9.5.89: The total sales of a company​ (in millions of​ dollars) t months from now are given by S(t)=0.04t^3+0.8t^2+8t+7.

The total sales of a company​ (in millions of​ dollars) t months from now are given by S(t)=0.04t^3+0.8t^2+8t+7.


​(A) Find S′(t).

​(B) Find ​S(6​) and S′(6) ​(to two decimal​ places).

​(C) Interpret ​S(11​)=245.04 and S′(11)=40.12.

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