Let's break it down. What is 5x3? After you get your answer but that extra zero in "30" Behind your some like this: (130) Then, to draw a picture draw 5 stick men, plus 3 stick men to the side show how you broke it down. Then show how to add the zero on the end.
The first, third and fifth options are valid as it mentions the three edges; no matter what the order is as long as the three points are mentioned its considered as the valid name
