Diane drinks 1 1/2 pints of milk a day. how much is this in cups?

1. whats 2/3 plus 1/9 2. 5/7 plus 1/2 3.7/15 plus 2/15

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation