What would the following contracts look like on a graph where the total income is on the horizontal axis and the number of tasks is on the vertical axis?
(a) A contract that pays 20 pesos a bushel for the first 40 bushels followed by 10 pesos a bushel for each additional bushel.
(b) A contract that pays a flat wage of 50 pesos, plus 25 pesos per bushel
(c) A contract that pays 250 pesos and requires you to harvest at least 10 bushels