If f(x)=3^x, then f(-2)= ?
A.1/9
B.9
C.-6
D.-9

Question

01-12-2021
Mathematics

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If f(x)=3^x, then f(-2)= ?
A.1/9
B.9
C.-6
D.-9

Sagot :

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SpAaaaaaazzzidn SpAaaaaaazzzidn · Answer 1 · 2021-12-01T23:46:35-05:00

SpAaaaaaazzzidn SpAaaaaaazzzidn

01-12-2021

You start by plugging in x=-2 into f(x)
f(-2) = 3^-2
Which gives you
f(-2) = 1/3^2 since negative exponents change the number to a dividend.
Then you square the 3
f(-2) = 1/9 or .111 repeating

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