The graphed system represents the rate at which two trucks are being filled, where x represents the time in minutes and y represents the percentage filled.
A diagonal curve rises through (negative 9, negative 50), (negative 4, 0), (0, 40) and (5, 90). A diagonal curve rises through (negative 10, negative 30), (negative 4, 0), (3, 35), (7, 60) and (10, 70). Both curves intersect at (negative 4, 0).
Which statement is true?
A.
The solution is nonviable because the percentage filled cannot be negative.
B.
The solution is nonviable because the time cannot be negative.
C.
The solution is nonviable because the time cannot be partial minutes.
D.
The solution is viable.