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Find f(4), where f(x)=3^x If f(x) = 81, what is x? Please answer asap!

Find f(4), where f(x)=3^x If f(x) = 81, what is x? Please answer asap!
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Find f(4), where f(x)=3^x If f(x) = 81, what is x? Please answer asap!

User Abora
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f(x) =3^x \implies f(4) =3^4=81\\\\\\\text{Since f(x) = 81 = f(4), the value of x is 4.}

User TerryMatula
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