The rational function graphed here (in blue) has equation f(x)=a/x+b. Find the values of a and b.
A) a=-4, b=3
B) a=3, b=-4
C) a=-3, b=4
D) a=4, b=-3

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?