Answer:
d)
Step-by-step explanation:
b)
This expression is not equivalent, as the original expression, , has 9 multiplied to
instead of y. You can interchange values like this when it comes to addition, but not multiplication.
c)
This expression is also not equivalent. After opening up the parentheses, it would again result in y being multiplied to .
d)
This expression is equivalent, as 9 and are still being multiplied together and y is added to the product. We can actually rearrange this to look like the original expression:
I hope this helps!