Look up sip it by iggy

The graph shows the distance kerri drives on a trip. what is kerri's speed?

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?

Find two numbers if their sum is 91 and the ratio is 6: 7?