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3. 15.8in^3 and 4. 15

Step-by-step explanation:

8 * 8

= 64

1011.2/64

= 15.8in^3

20.8 * 21.5

= 447.2

6708/447.2

= 15

Pls brainliest :)

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