The volume of a box(v) varies directly with its length(l). if one of the boxes has a volume of 325 cubic inches and a length of 13 inches, what is the constant of proportionality for the group of boxes? 4,225 25 1/25

 25

Step-by-step explanation:

We know that if y (dependent variable) varies directly with x(Independent variable) then the equation for direct variation is given by :-

, where k is the proportionality constant.

Since, it is given that the  volume ( dependent variable )  of a box(V) varies directly with its length(l) (independent variable) , then the equation will be

, where k is the proportionality constant.

If one of the boxes has a volume of 325 cubic inches and a length of 13 inches, then

Hence, the constant of proportionality for the group of boxes = 25

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x