The square of the orbital period of a planet is proportional to the cube of its distance from the sun. this is expressed in the formula t^2=a^3, where t is time, measured in years, and a is distance, measured in astronomical units (1 astronomical unit is the mean distance of earth from the sun). pluto's orbital period is approximately 247.9 times that of earth's estimate pluto's mean distance from the sun.

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.