Give three instances of the pattern a(b+c)=a*b+a*c

Is this a polynomial function? i need to know asap

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?

What is the value of x? enter your answer in the box.