To find the annual profit when the pizza shop owner sells 350 pizzas, we can use the profit function \( p(n) = 32n - 0.04n^2 \).
Substituting \( n = 350 \) into the equation:
\[ p(350) = 32(350) - 0.04(350^2) \]
Calculating \( 32(350) \):
\[ 32 \times 350 = 11200 \]
Now calculating \( 0.04(350^2) \):
First, find \( 350^2 \):
\[ 350^2 = 122500 \]
Then calculate \( 0.04 \times 122500 \):
\[ 0.04 \times 122500 = 4900 \]
Now, substitute these values back into the profit function:
\[ p(350) = 11200 - 4900 \]
Calculating the final profit:
\[ p(350) = 6300 \]
Therefore, the annual profit if the pizza shop owner sells 350 pizzas is \( \boxed{6300} \) dollars.