Question

How to answer this question the right way

Answer 1

I hope this helps you

Answer 2

Equivalent means same.
The questions says: Which of the following is the same expression as 15x+24ax? (They DIDN'T ask for you to solve the expression)

So when you look at D) (15+24a)x And solve it,
you will get the same expression as 15x+24ax.

So the answer is D.

Hope this helped!