Answer:
The correct option is C.
Step-by-step explanation:
The given function is
\(y=6\cdot 4^x\)
Substitute x=-3 in the given function.
\(y=6\cdot 4^{-3}\)
\(y=\frac{6}{4^3}\) \([\because x^{-1}=\frac{1}{x}]\)
\(y=\frac{6}{64}\)
Cancel out the common factor.
\(y=\frac{3}{32}\)
Therefore the correct option is C.
