The line of best fit drawn on the plot shown is used to predict the number of tickets sold on a certain day. use the two points shown on the line of best fit to calculate its slope to the nearest tenth.
halp

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)