To find the ratio of the number of orders for pepperoni pizza to cheese pizza, we use the numbers given in the table.
The number of orders for pepperoni pizza is 8, and the number of orders for cheese pizza is 10.
The ratio of pepperoni pizza to cheese pizza is:
\[ \text{Ratio} = \frac{\text{Pepperoni Pizza}}{\text{Cheese Pizza}} = \frac{8}{10} \]
Now, we can simplify this fraction:
\[ \frac{8}{10} = \frac{4}{5} \]
Thus, the ratio of the number of orders for pepperoni pizza to cheese pizza is \(4:5\).
Answer: 4:5