# Exponential Functions Word Problems

Many students find exponential functions word problems difficult. At TuLyn, we created word problems on exponential functions to help you better understand exponential functions.

### Graphing Exponential Functions Word Problems

Practice graphing exponential functions word problems.

### Evaluating Exponential Functions Word Problems

Practice evaluating exponential functions word problems.

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Below is the list of all word problems we have on exponential functions.

# Exponential Functions Word Problems

• 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

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