To find the population of bunnies after 5 months using the equation \( P = 12(3)^x \), we can substitute \( x = 5 \) into the equation.
\[ P = 12(3)^5 \]
Now, we calculate \( (3)^5 \):
\[ (3)^5 = 3 \times 3 \times 3 \times 3 \times 3 = 243 \]
Now substitute this value back into the equation:
\[ P = 12 \times 243 \]
Now, we calculate \( 12 \times 243 \):
\[ 12 \times 243 = 2916 \]
Thus, the population of bunnies after 5 months will be 2916.