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June 20th, 2017, 07:38 PM   #1
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What is f(x)=5^(x-1)?

I saw this on a test, but can't remember what it was referring to. I've been on Khan Academy and can't find an explanation.

$f(x)=5^{x-1}$

I chose $f(0)$

Last edited by skipjack; June 21st, 2017 at 07:33 AM.
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June 20th, 2017, 09:02 PM   #2
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You're not giving much to go on here ... fyi, $f(0)=\dfrac{1}{5}$
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June 20th, 2017, 11:02 PM   #3
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Was it a Khan Academy test?
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June 21st, 2017, 05:46 AM   #4
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No, it was an accuplacer. It's taken me a little while to realize it, but the whole test is covering algebra II which I have never taken. The practice tests are in no way representative of what is on the actual tests. But I'm 3 points away from getting into the class I need, so I'm studying as much as I can.

Why does $f(0)=\dfrac{1}{5}$ ?
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June 21st, 2017, 07:14 AM   #5
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I get it $5^{-1}=\dfrac{1}{5}$

Didn't even see the setup.
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June 22nd, 2017, 04:51 AM   #6
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I don't understand why Opposite "chose f(0)"! What was the question?
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