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IFadi · Answer 1 · 2023-09-23T13:09:12+0000

We have the function

$S(t)=1200+540\ln(31t+e)$

And we want to evaluate S(13), therefore

$\begin{gathered} S(13)=1200+540\ln(31\cdot13+e) \\ \\ S(13)=1200+540\operatorname{\ln}(403+e) \\ \\ \end{gathered}$

Here we must use a calculator to get the result

$\begin{gathered} S(13)=1200+540\operatorname{\ln}(403+e) \\ \\ S(13)=1200+540\cdot6.00566 \\ \\ S(13)=1200+3243.05587 \\ \\ S(13)=4443.05587708 \\ \\ S(13)=4443 \end{gathered}$

The predicted sales in 13 years are 4443 computers

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