Thanks to my handy dandy calculator 215.33(bar notation) sections of rope.
x=4 because if you add 7 to 10 you get -2x-3=-14x then you add -2x to -14x and you get -3=-12 then you divide by -3 and -12 to get 4
Here is your answer:
Independent Variable: Is a variable that is being tested..
Dependent Variable: Is a variable that's being measured.
So in this case.
The independent variable is water bottles in a case.
Dependent Variable: Is how many water bottles are in a case.
For this next part I'm not sure.
But as you look at the graph you see a pattern.
1×24=24
Etc...
So the equation will be: 1×24
The pattern is 24.
So....
1×24=24
2×24=48
5×24=120
10×24=240
20×24=480
Hope this Helps.