Question

If the population of bacteria doubles in 4 hours how long will it take for it to triple its original size

Answer 1

\[2^{\frac{t}{4}}=3\]
\[\frac{t}{4}=\frac{\ln(3)}{\ln(2)}\]
\[t=\frac{4\ln(3)}{\ln(2)}\]

Answer 2

6.34 hours?

Answer 3

i don't know, need a calculator

Answer 4

yes, that is what i get

Answer 5

k thanks!

Answer 6

can you help with this one too?

Answer 7

if a sales of a company increases exponentially by 50% from 1985 to 1990, by what percent will the sales increase from 1990 to 1996