After conducting a survey of all her classmates mitch discoveries that the amount of money everyone spends buying books each month has a mean of $30. what does the mean say about the amount of class me spend on books?

The mean is the average amount of money spent on books is $30.

Therefore, it says that $30 is the average amount of money her classmates spend on books each month.

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3