A set of cards contains four suits. Two suits are red, and two suits are black. In each suit there are cards numbered from 2 to 10 as well as a jack, a queen, a king, and an ace. Consider the following probability for one card selected at random.
P(the selected card is a three or a red card)

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

How do you solve a question like this?