BONUS! One brand of suntan lotions comes in a small size with x ounces of lotion and a regular size with y ounces of lotion. Two small bottles plus
one regular bottle contain 15 ounces of lotion, while one small bottle and
two regular bottles contain 19.5 ounces of lotion. This relationship is
shown in the system of equations below. x represents the ounces of
lotion in a small bottle and y represents the ounces of lotion in a regular
bottle. How many ounces are in the small bottle?

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

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.