I'm not sure that I have the collumns for c(x) and p(x) correct. If you could check them and if they're wrong give the correct answers? PLZ SHOW WORK, thank you!!

4. (2.1, p. 56) The financial department for a company established the following cost function for producing and selling * thousand notebook computers: Cix) - 4,000 + 500x thousand dollars (a) Write a profit function for producing and selling x thousand notebook computers and indicate its domain. (b) Complete the below table, computing profits to the nearest thousand dollars. (c) Note: Price-demand function - p(x) - 2,000 - 60x. Domain - 1