The average precipitation in Portland, Oregon is 35.98 inches. Scottsdale, Arizona has an average precipitation of 10.32 inches. What is the difference in the two cities’ average annual precipitation? Could you write it in a equation with a variable and variable's explanation.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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?

Iknow the answer but the calculator doesn't seem to give the right one