I need help in discrete math

For 3.1, use either modus ponens or modus tollens to fill in the blanks in the arguments so that the completed argument is logically valid. 3.1 (a) If is rational, then -a for some integers a & b. There are no integers a & b that make t -- (b) If the shape is a square, then the shape is a rectangle. The company's logo is a square. (c) If you watched the game, then you have cable. . You have cable. (d) If Jill got a raise, then she must have done a good job. . Jill did not get a raise