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Andrej [43]
4 years ago
13

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!

Mathematics
1 answer:
Keith_Richards [23]4 years ago
4 0

Answer: \bold{D.\ \bigg(-\infty, \dfrac{ln\ 4}{0.2}\bigg)}

<u>Step-by-step explanation:</u>

y=\dfrac{c}{1+ae^{-rx}}\qquad \text{where growth rate increases from}\ -\infty\ to\ \dfrac{ln\ a}{r}

f(x) = \dfrac{15}{1+4e^{-0.2x}}\qquad \rightarrow \qquad a=4, r=0.2

\text{So, the growth rate increases over the interval}\ \bigg(-\infty, \dfrac{ln\ 4}{0.2}\bigg)

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