Eva M.

# Explain why some aren't exponential and some are?

Which scenario would best be modeled by an exponential growth function?

A. A babysitter who gets paid \$10 per child.

B. Bacteria in a petri dish that triples every hour.

C. Water in a bucket that is evaporating by half the volume every day.

D. A worker who receives a one-time bonus of 11% of their annual salary.

## 2 Answers By Expert Tutors

By: Electrical Engineer with Experience Tutoring Math and Physics

Eva M.

thank you, I understand more now!
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3d BS in Chemistry and Mathematics with honors, MD

Eva M.

I was wondering what (log) was? and how do you use it?
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3d Carl K.

tutor
The 'log' function reports the exponent needed to raise 10 to in order to get the number. It is the inverse of exponentiation. log 100 = 2 asks what is the exponent of 10 that gives us the answer of 100? 10^2 =100. In this case, 10 is the base, and the exponent is 2. This is also called a common logarithm, as opposed to a natural logarithm, which uses e (2.718~) as the base. Here are a few examples: log 1000 = 3, log 10,000 = 4, log 316.227 = 2.5
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2d

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