6. The number of bacteria N in a culture is given by the model N(t) = 250e 0.0156 where t is the time in hours.
Find how many hours it takes for the original population to double. Round your answer to the nearest hundredth
of an hour.

i just need to know how to work this out!! please help


6 The Number Of Bacteria N In A Culture Is Given By The Model Nt 250e 00156 Where T Is The Time In Hours Find How Many Hours It Takes For The Original Populatio class=

Sagot :

Answer:

t ≈ 44.43 hours

Step-by-step explanation:

Expression that models the population of a bacteria after time 't' is,

N(t) = [tex]250(e^{0.0156t})[/tex]

Here initial population = 250

And N(t) = Population after 't' hours

t = duration

We have to find the duration in which bacterial population gets doubled.

N(t) = 2×250 = 500

From the given expression,

500 = [tex]250(e^{0.0156t})[/tex]

[tex]e^{0.0156t}=2[/tex]

[tex]\text{ln}(e^{0.0156t})=\text{ln}(2)[/tex]

0.0156t[ln(e)] = 0.693147

0.0156t = 0.693147

t = [tex]\frac{0.693147}{0.0156}[/tex]

t = 44.432

t ≈ 44.43 hours