When a car is moving at x miles per hour and the driver slams on the breaks, the car will travel x+(1/20)x^2 feet. If a car travels 175 feet after the driver decides to stop, how fast was the car moving?
I tried setting it up as
.05x^2 + x - 175 = 0
factored as:
(.5x+35)(.1x-5)=0
But then I get two points as an answer, neither of which seems like it could be a speed. Am I setting this up correctly?
I tried setting it up as
.05x^2 + x - 175 = 0
factored as:
(.5x+35)(.1x-5)=0
But then I get two points as an answer, neither of which seems like it could be a speed. Am I setting this up correctly?