USE THE DISTRIBUTIVE PROPERTY TO SIMPLIFY.

3(X+3)

Wouldn't it be 3x + 9? Check my thinking.

Yes, you are correct! To simplify the expression 3(X+3) using the distributive property, you need to distribute the 3 to both terms inside the parentheses.

When you distribute 3 to X, you get 3 * X which simplifies to 3X.
When you distribute 3 to 3, you get 3 * 3 which simplifies to 9.

Therefore, 3(X+3) simplifies to 3X + 9.