A formula for the stopping distance of an average car is 5 = + x
20
where s is the stopping distance in feet and x is the car's speed in miles per hour.
If a car is 75 feet from an intersection at which it must stop, what is the maximum speed it can be traveling?
O A. 60 miles per hour
B. 50 miles per hour
C. 40 miles per hour
OD. 30 miles per hour
O E. 20 miles per hour