scale: 1 inch to 5 feet actual area: 225 square feet scale: 1 inch to 7 feet actual area: 147 square feet scale: 1 inch to 8 feet actual area: 256 square feet scale: 1 inch to 4 feet actual area: 128 square feet area of scale drawing scale and actual area scale drawing area: 9 square inches arrowRight scale drawing area: 4 square inches arrowRight scale drawing area: 8 square inches arrowRight scale drawing area: 3 square 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

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

28

step-by-step explanation:

8+8+6+6