- A biologist is researching a newly-discovered species (#729)
A biologist is researching a newly-discovered species of bacteria. At time t = 0 hours, he puts one hundred bacteria into what he has determined to be a favorable growth medium. Six hours later, he measures 450 bacteria. Assuming exponential growth, what is the growth constant "k" for the bacteria? (Round k to two decimal places.)
exponential functions, exponents, functions, number sense
- If there are 45 rats in a New York (#1765)
If there are 45 rats in a New York deli and the number of rats doubles every 7 days how long will it take for the deli to have 100...
exponential functions, exponents, functions, exponential growth
- If you put 25 cents in a bank (#833)
If you put 25 cents in a bank and your money doubles each ...
exponential functions, exponents, functions, number sense
- Suppose the Population of D.C. (#355)
Suppose the Population of D.C. in January of 2006 was 580,000 and 2 percent of them moved every 6 ...
exponential functions, exponents, functions, number sense
- The rat population in a major metropolitan city (#840)
The rat population in a major metropolitan city is given by the formula n(t)= 73 e0.015 t where t is measured in years since 1990 and n(t) is measured in millions.
What was the rat population in 1990 ...
functions, exponents, number sense, exponential functions
- The world population in 1950 was estimated (#3410)
The world population in 1950 was estimated to be 2.5 bilion. The population has grown exponentially so that in 2008 there were an estimated 6.8 ...
functions, exponents, exponential functions
