Answer:
$7,429 I think (it has to be 20 characters ignore this part)
70mi/1hr x 1hr/60min x 1min/60sec= .0194/1sec
Out of the 3 points, only ABC are collinear. Hence, only ABC can be chosen. The chances of choosing ABC out of ABCD is 1/4. Hence, the probability is 25%.
The answer is 4.8. You have to subtract 98.6 from 103.4.