What is the percentage change from 12 to 15

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18

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?