Variables
In the logarithm formula, what does k stand for?
Rate of growth/decay
How many hours will it take a culture of bacteria to increase from 20 to 2000?
7.50028
5^x=3125
5
In the logarithm formula, what does f(t) stand for?
A radioactive substance has a half-life of 32 years. Find the constant k in the decay formula for the substance?
0.02
12^r=13
1.03
The intial value
Four bacteria are growing on your desk and they grow by 40% every minute, assuming that class is 45 minutes long how much bacteria will accumulate on the desk over one class period?
262,640,000 bacteria
20^-6n + 6=55
-0.22
In the logarithm formula, what does t stand for?
Time
e^x=28
3.33
5 * 6^3m=20
4
What is the difference in the formulas for exponential growth and decay?
Exponential growth is positive, while exponential decay is negative. The negative sign goes in front of the k.
In 2007, the population of the state of Georiga was 9.36 million people. In 2000, it was 8.18.
0.01925
9^n+10+3=81
78