You ran 4 1/2 times arounda 2 1/4 mile track. How far did you run?

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?