Need the last one is the question and the first one is. number 20 and the second is number worry about number 19 i already did thay as u can

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.

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

15/16 as a decimal rounded to the nearest hundredth