Laura has $20 and saves at a rate of $15 per week. Ryan has $50 and saves at a rate of $10 per week. If they do not spend any of their savings, after how many weeks will Laura and Ryan have the same amount of money?

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.