When the new book units of fire was released, jonathan decided to read it in one sitting for his book report. he started at 11: 00 a. m. on saturday morning and read until 8: 00 p. m. that night, for a total of 9 hours. for school, however, he needed to record the exact number he spent reading. what is the order of magnitude of the number of seconds he reads?

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 california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.