Since x = 3, you can substitute/plug in 3 for "x" in the expression:
[tex]\frac{4^x}{2^x}[/tex] Plug in 3 into "x", as x = 3
[tex]\frac{4^3}{2^3}[/tex]
[tex]\frac{4*4*4}{2*2*2}= \frac{64}{8}[/tex] Simplify the fraction
8
