In a survey of 455 people, 63% said they have an iPhone. About how many people surveyed have an iPhone?

Mathematics

1 answer:

mario62 [17]3 years ago

3 0

287 people said they did unless you want decimals its 286.65

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$\bf =ae^{kt}\qquad 
\begin{cases}
1994\impliedby \textit{year 0, starting point}\\
t=0\qquad P=182
\end{cases}\implies 182=ae^{k0}
\\\\\\
182=a\cdot e^0\implies 182=a\cdot 1\implies 182=a
\\\\\\
thus\qquad P=182e^{kt}\\\\
-------------------------------\\\\$

$\bf P=182e^{kt}\qquad 
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2002\impliedby \textit{8 years later}\\
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\\\\\\
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