You downloaded a video game to your computer. you have a 60 minute free trial of the game. it takes 5 minutes to set up the game and 7 minutes to play each level. you want to find out how many levels you can play for free.

Sound travels about 750 miles per hour. a) suppose it takes about 1.5 seconds to hear the echo. how far away is the canyon wall, in feet? for this i got 825 ft b) suppose you stand 1,925 feet from the canyon wall and sound the horn. how long will it take to hear the echo? (i'm stuck on this)