Solve the problem.
-If $f ( x ) = \log 7 x$, find $f \left( 7 ^ { 3 } \right)$.
A) 21
B) 3
C) $\log _ { 3 } x$
D) 7

Name: Solve the problem. -If $f ( x ) = \log 7 x$, find $f \left( 7 ^ { 3 } \right)$. A) 21 B) 3 C) $\log _ { 3 } x$ D) 7
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Question

Quizplus · Accepted Answer

The function $f(x) = \log 7x$ can be rewritten as $f(x) = \log(7) + \log(x)$. When $x = 7^3$, $f(7^3) = \log(7) + \log(7^3) = \log(7) + 3\log(7) = 4\log(7)$. Since $\log(7^4) = 4\log(7)$, the value simplifies to 3.

Solve the Problem f(x)=log⁡7xf ( x ) = \log 7 xf(x)=log7x

Solve the Problem $f ( x ) = \log 7 x$