What is the domain and range of the function f(x) =

(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

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test