100 points! Brainliest!

The probability that an adult possesses a credit card is .70. a researcher selects two adults at random. by assuming the independence, the probability that the first adult possesses a credit card and the second adult does not possess a credit card is:

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

Factor these polynomials and explain how 1. 12x - 3x^2 2. 20 - 240x^2