1.) Are the two expressions equivalent? Write yes or no and
explain why.
9 (y + 5) = 9y + 45

yes

Step-by-step explanation:

if you distribute the 9 into the parenthesis you get 9y + 45. Therefore, both equations are equivalent seeing that they both equal to 9y + 45.

Yes

Step-by-step explanation:

If you use the distribution property, then you can write it out like 9 x y + 9 x 5. That is the same as 9y+45.