How do you write 10,000,000 in expanded form

This is so hard and it’s for a test

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.

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5