Final answer:
To solve for the variable 'k' in the equation B = kpx, divide both sides of the equation by px, yielding the solution k = B / px.
Step-by-step explanation:
To solve the equation B = kpx for the variable k, we need to isolate k on one side of the equation. This can be done by dividing both sides of the equation by px. Here are the steps:
- Start with the original equation: B = kpx.
- Divide both sides by px to isolate k: k = B / px.
Therefore, the correct expression when solved for k is (a) k = B / px.