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10-06-2021
Mathematics

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Find (-4) for f(x) = 9(3)^x
A. -108
B. 1/3
C. -729
D. 1/9

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H4WK1NS H4WK1NS

10-06-2021

Answer:

D

Step-by-step explanation:

9(3)^-4

3^2 × (3^-4)

in algebraic expression a^n × a^m = a^n+m

3^2+(-4)

3^-2

but 3^-2 = 1/3²

1/3²= 1/9

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