What is the answer for all of them?

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

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.

The square root of 9x plus 7 plus the square rot of 2x equall to 7