Answer 3 is (0, 5)
Answer 4 is in comments.
Maybe write it down, like how you see other math problems.
And then solve it!
:D
Answer: a. 6 rows 6 people per row, 9 rows 4 people in each row, 36 rows 1 person per row, 18 rows 2 people per row, 12 rows 3 people per row, 9 rows 4 people per row
Step-by-step explanation: 4 rows 9 people, 3 rows 12 people