The number of cars on the road in Northern Virginia can be modeled sinusoidally where the x axis represents time and the y axis represents the number of cars (in thousands) on the road at any given time. The number of cars on the road peaks at 100,000 (100 if counted in thousands) during rush hours at 7 am and 7 pm. The number of cars is at a minimum of 10,000 (if counted in thousands) at 1am and 1pm