1. A population of bacteria grows at the rate of 13.2% in one hour. What is the hourly growth factor?
A. 13.2%
B. 133.2%
C. 113.2%
D. There is not enough information to determine the hourly growth factor.
2. The hourly growth factor for a population of bacteria is 0.98. What is the hourly growth rate?
A. -2%
B. 98%
C. 198%
D. -.98%

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- anonymous

you should be able to use growth and decay formula \[y=Ae ^{kt}\]

- anonymous

y = total population after time t
A = Starting population
k = % rate of growth
t = time in hours or years
e = Eulers number

- campbell_st

you don't need a formula... you just need to read the question

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- campbell_st

and what if the formula is
A = P(1 + r/100)^t

- anonymous

oops... I just read the bacteria part... sorry

- KJ4UTS

So for number 2 would the 0.98 just be 98%?

- KJ4UTS

and for number one, 1.132 or 113.2%?

- campbell_st

so if you start with 100 and it grows to 113.2 what is the growth..?

- campbell_st

for number 2... you start with 100 and it declines to 98... so what did it decline by
answer as a pergentage

- KJ4UTS

-2%

- campbell_st

that's correct

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