To calculate the time it takes to drive a certain distance at a given speed, you can use the formula:
Time = Distance / Speed
In this case, the distance is 675 miles and the speed is 80 mph. Plugging these values into the formula, we get:
Time = 675 miles / 80 mph
= 8.4375 hours
Since we can't drive for a fraction of an hour, we round this number up to the nearest whole number, which is 8.44 hours. Therefore, it would take approximately 8.44 hours to drive 675 miles at a constant speed of 80 mph.