The 8 students in the Environmental Club represent 25% of the students in the seventh grade. How many students are in the seventh grade?

32

Step-by-step explanation:

There are 32 students in the seventh grade' because if you multiply 25% by 4, you will get a 100%, which is what you are looking for. But you also have to multiply the 8 by 4, which will equal to 32,

the temperature will be -18 just do 62 + (-40) + (-40)

step-by-step explanation:

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