SOLUTION: Starting from 1.8 miles away, a car drives towards a speed check point and then passes it. The car travels at a constant rate of 45 MPH. The distance the car travels from the check

Question 920444: Starting from 1.8 miles away, a car drives towards a speed check point and then passes it. The car travels at a constant rate of 45 MPH. The distance the car travels from the check point is given by d=/1.8-45t/. At what times is the car 0.4 miles from the checkpoint?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Starting from 1.8 miles away, a car drives towards a speed check point and then passes it. The car travels at a constant rate of 45 MPH. The distance the car travels from the check point is given by d=/1.8-45t/. At what times is the car 0.4 miles from the checkpoint?
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Solve::
|1.8-45t| = 0.4
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1.8-45t = 0.4 or 1.8-45t = -0.4
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45t = 1.8-0.4
45t = 1.4
t = 0.03
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Or
45t = 1.8+0.4
45t = 2.2
t = 0.049
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Cheers,
Stan H.
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