rate of change as in the gradient??
if yes then the formula would be rise over run, so y over x, therefore 1/3
Absjnwksnekendkoend d points
Answer:
I think it should be 
Step-by-step explanation:
When the question said area of the cube, I think it was supposed to be surface area, which would 
where a is the length of one edge. Given that the length of one edge is 2x, we would plug in 2x to the equation to get
which would become .
Answer:
6
Step-by-step explanation:
If you solve for x you get your answer. First, 20 - 10 gets you 10. Then you subtract that 10 from both sides of your equation so it now looks like 5x = 30. Last you divide both sides by 5 and get x = 6.
