52,000$ because 52,000 is 2/3 of 72,000 and 12 is 2/3 of 18

Differentiate both sides wrt
:

By the chain rule, we get


Solve for
:


Technically only 1...
If you have to use 4 rows there is only one option;
1 1 1 2
1 1 2 1
1 2 1 1
2 1 1 1
Each number represents the total kids in a row.
1st number is row 1 second number is row 2 etc.
If you can use 2 or 3 rows there are some more answers.
Answer:
32 and 16x GCF = 16
Step-by-step explanation:
Hot dogs- 4 packs (9 times 4 = 36)
Buns - 3 packs (12 times 3 = 36)