in an experiment, researchers record the amount of time it takes for a dog to naivigate through a maze and find a treat. the observed times, in seconds, are: 57, 57, 68, 72, 74, 77, 80, 88, 96, 105. what is the interquartile range of the observed times

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

9/10 divide by -3/15 as a mixed number

There are 8 movies that you would like to see currently showing in theatres. in how many different ways can you choose a movie to see this saturday and one to see this sunday?