Question

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%

Answer 1

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

Answer 2

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

Answer 3

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

Answer 4

and what if the formula is

A = P(1 + r/100)^t

Answer 5

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

Answer 6

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

Answer 7

and for number one, 1.132 or 113.2%?

Answer 8

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

Answer 9

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

answer as a pergentage

Answer 10

-2%

Answer 11

that's correct