Explain how you can use structure to find the last number in the bottom row

Use the distributive law to multiply. 3(4x + 5y + 6)

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?

Y=21.95x+10 y=22.45x solve by substitution