If each pizza dough needs 1 \(\frac{1}{3}\)\\
We will need to multiply 9 x 1\(\frac{1}{3}\)\\
we will turn the fraction into a mixed fraction and we'll end up with \(\frac{4}{3}\)\\
We multiply 9 x \(\frac{4}{3}\)
and we end up with \(\frac{36}{3} = 12\)
The cook need 12 cups of flour.