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5 votes
What is the logarithmic function modeled by the following table?

x f(x)
5 1
25 2
125 3

User Adam Tropp
by
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2 Answers

1 vote
The answer would be the following: f(x)=5^x
User Sheena
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3 votes
So we need to come up with a function that when we plug x into it, it gives us f(x). Logarithims ask: what exponent do I need to put on b (see the diagram to see what b is) to make it equal x. In the diagram below y is our f(x).

So we have logb (x) = f(x), we need to find what b is. Well the values look like 5 then 5 squared, then 5 cubed etc. So b=5.

To test this put one of the exponents (f(x)-values) on b and see if it equals the x value next to it in the table.

The answer is:

log 5 x = f(x)
What is the logarithmic function modeled by the following table? x f(x) 5 1 25 2 125 3-example-1
User Anton Novoselov
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7.8k points

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