What is the scale factor if a 8 in. by 16 in. photograph is enlarged to a poster that is 5.33 ft. by 10.67 ft.?

Why do interests rates on loans to be lower in a weak economy than in a strong one

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

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?