Round 283,657 to the nearest thousand

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

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.

If y varies directly as x2 and y=6 when x=6, find the constant of variation.