800,000 is the right answer.
Answer:
There are 21 students.
Step-by-step explanation:
If there are 21 students, and each of them had $21 then this would equal a total of $441 because 21 multiplied by 21 equals 441.
Hope this helps,
Trey
If n = 5, then 9n = 45
45 - 15 = 30, which is the same thing as 6n
4 x 6 = 24 six times four is twenty four