Can someone give me the answer and give an explanation on how to do it?

Which of the following is the result of expanding

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.