2. let f: a → b and g: b c be functions. prove or disprove each of the following: (a) if both f and g are one-to-one then go f is one-to-one. (b) if go f is one-to-one then f is one-to-one. (c) if go f is one-to-one then g is one-to-one. (d) if go f is one-to-one and f is onto then g is one-to-one.

You are a male who just graduated from college with a bachelor's degree. you have a job paying $50,780.00/yr. a. how does your salary compare to the yearly median earnings for a male with a bachelor's degree? b. what is the difference between the yearly median earnings for a male with a bachelor's degree compared to a male who does not attend college after earning a high school diploma?