A car is traveling at a constant velocity. After two hours the car has traveled 90 miles. After five hours the car has traveled 225 miles. Assuming a linear equation fits this situation, how far will the car have traveled after seven hours?

Question

texaschic101 · Answer

2/90 = 1/x (2 hrs car traveled 90 miles = 1 hour traveled x miles)
cross multiply
2x = 90
x = 45
So the car travels 45 miles per hour.
distance traveled = 45 times x (x being the number of miles)
D = (45)(x)
D = (45)(7)
D = 315

anonymous · Answer

so the answer is 315

texaschic101 · Answer

yes.....the linear equation is : D = 45x (where D is distance and x is number of miles. 315 is the answer to the equation. I think you will need both the equation and the answer.