SOLUTION: After leaving Moose Jaw, Hanson drove 200km at x km/hr and then decreased his speed by 20km/hr and drove 240 additional kilometers. Make a table expressing these facts. Write a rat

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: After leaving Moose Jaw, Hanson drove 200km at x km/hr and then decreased his speed by 20km/hr and drove 240 additional kilometers. Make a table expressing these facts. Write a rat      Log On


   

Question 148463: After leaving Moose Jaw, Hanson drove 200km at x km/hr and then decreased his speed by 20km/hr and drove 240 additional kilometers. Make a table expressing these facts. Write a rational expression for x=100.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
After leaving Moose Jaw, Hanson drove 200km at x km/hr and then decreased his speed by 20km/hr and drove 240 additional kilometers. Make a table expressing these facts.
:
Let y = total travel time in hrs; Time = dist%2Fspeed
:
An equation of this could be:
y = 200%2Fx + 240%2F%28%28x-20%29%29
:
A table from this equation
x | y
--------
40 |17
50 |12
60 | 9.33
80 | 6.5
100| 5
:
Write a rational expression for x=100.
y = 200%2F100 + 240%2F%28%28100-20%29%29