Kmart is advertising a back to school sale on pencils . a pack of ,30 sells for 7.97 where as a 12 pack of the same brand costs 4.77 whuch is better to buy?

30 is 6 multiplied by a number y as a equation

Write the fraction or mixed number and the decimal shown by the model

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?