Sonya buys four pairs of shoes on sale for buy one, get one 50% off. the sales tax is 6.5%. if the original price for each pair of shoes was $35, how much does sonya pay for the four pairs altogether?

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.