Answer:
-19
Step-by-step explanation:
Simple...
you have:

You want to find m-->>>
1.)Isolate m

Leaving you with...
F*

=

Keep isolating m-->>>


Square root to solve what just m is-->>>

=

That is how you solve for m...
Thus, your answer.
Twenty-Six Million, One Hundred Forty-Three Thousand, Sixty-Two
The answer is 6 because 21+9=30 and 30-6=24 and 24 is the number of students in the class.
4 is 16.3, I don't know 5 or 6, 7 is 176, I don't know 8 or 9, 10 is 8.1, I don't know 11, and 12 is 48.
(I used a calculator, lol)