What is 24.55 rounded to the nearest tenth

(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

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

Find the value of x. give reasons to justify your solutions! l, m ∈ kn