The equation mc024-1.jpg shows the relationship between a planet’s orbital period, T, and the planet’s mean distance from the sun, A, in astronomical units, AU. If planet Y is twice the mean distance from the sun as planet X, by what factor is the orbital period increased?

Question

Ferredoxin4 · Answer

Not sure what's the equation, but I don't think it's necessary. Apply the property of means:

$$μ_{bx} = bμ_{x}$$

Your answer would be 2.