What represents the relationship betwen r and s

12 is 33 1/3% of 36 what is the whole

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

In the 30-60-90 triangle below side s has a length of and side r has a length