I don't understand this question, can you help me please?

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

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.