In which place is the 7 in the following number: 1,243.7294 *

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?