Graph shows the solution to the inequality Negative 3 x minus 7 less-than 20

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

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 of the following is the graph of y= square root -x-3