Help needed plxxx i need it

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.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Write the function for the graph. (1.8) (0,4)