What are the solutions of the equation x^2 - 30 = x?

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.

Which of the symbols correctly relates the two numbers ?

Acar company uses the table below to show customers the approximate amount of gas used when a car has been driven a certain number of miles.