The equation 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 the orbital period of planet Y is twice
the orbital period of planet X, by what factor is the mean distance
increased?

The equation T^2=A^3 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 the orbital period of planet Y is twice
the orbital period of planet X, by what factor is the mean distance
increased?