The expression 500(2)x can be used to determine the size of a population that grows over a period of time. what does 500 represent in the expression?

The measure of an angle is 117°. what is the measure of a supplementary angle?

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?

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.