Whats greater 6and3over seven or 6.2

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.

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?

What is the perimeter of an equilateral triangle if each side is (x+3)?