Why do we not wash mushrooms before cooking them

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom

15 points what is the end behavior of this graph? & what is the asymptote of this graph?