Final answer:
After applying the distributive property, Gustavo's expression is 45 + 9w.
Step-by-step explanation:
After applying the distributive property to the expression 9(w+5), we can distribute the 9 to both terms inside the parentheses:
9(w+5) = 9w + 9(5)
This simplifies to:
9w + 45
Next, Gustavo used the commutative property, which allows us to change the order of addition:
9w + 45 = 45 + 9w
So, after applying the distributive property and then using the commutative property, Gustavo's expression is 45 + 9w.