The chance of getting the flu is about 15% without a vaccine. The vaccine reduces the risk of contracting the flu by 60%. The U. S. population is about 310,000,000. if everyone got the vaccine how many cases of the flu could be avoided?

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.