Need on this question. soon and fast. you.

5 inches = 7 feet

21/7 = 3, 3*5 = 15 inches

28/7 = 4, 4 *5 = 20 inches

3rd answer 15 inches by 20 inches

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

30

step-by-step explanation:

idk

i hope i