Final answer:
To simplify the expression, distribute x to both terms inside the parentheses. The number that belongs in the green box is 11.
Step-by-step explanation:
To simplify the expression x(11y + 2) using the distributive property, we need to distribute the x to both terms inside the parentheses. This means multiplying x by 11y and then multiplying x by 2.
The result is 11xy + 2x. So, the number that belongs in the green box is 11.
Learn more about Simplifying expressions using the distributive property