Algebra-2

1. First, write the equation for joint variation:

When a variable varies jointly as and the cube of , the equation is , where is the constant of variation that we need to find.

 

2. Then, substitute the given values into the equation:

We are given that , , and .

Substituting these values into the equation , we get .

 

3. Next, simplify the right side of the equation:

First, calculate , which is

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