Brian spent $18 on sticky notes and envelopes. each pack of sticky notes costs $3. a pick of envelopes costs $6. if he buys an equal number of packs of each, how many packs of each did brian buy?

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.