Let $f(x)=-4 x+5$. Find and simplify $f(3 m-4)$
$f(3 m-4)=\square($ Simplify your answer.)

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Answer

Final Answer: $f(3 m-4)=\boxed{21 - 12m}$

Steps

Step 1 ：Let $f(x)=-4 x+5$. We are asked to find and simplify $f(3 m-4)$.

Step 2 ：To find $f(3m-4)$, we need to substitute $x$ with $3m-4$ in the function $f(x)=-4x+5$.

Step 3 ：So, $f(3m-4) = -4(3m-4) + 5$

Step 4 ：Simplify the expression to get $f(3m-4) = 21 - 12m$

Step 5 ：Final Answer: $f(3 m-4)=\boxed{21 - 12m}$