Problem 1: part 1: determine whether or not the following functions are injective or surjective. everything needs to be justified: for instance, if you think a function is injective but not surjective, you need to justify both things.

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

50 points~ ! i have to turn this in tomarrow