Answer:
f(3)=-192
Explanation:
Given the function f(n) defined as follows:
[tex]f(n)=-3(4)^n[/tex]To find the value of f(3), we substitute 3 for n in the function.
Therefore:
[tex]\begin{gathered} f(3)=-3(4)^3 \\ =-3\times64 \\ =-192 \end{gathered}[/tex]