I was caught in a speed trap,total distance of trap was .038 miles , I was timed in 3.06 seconds .how do I figure out how fast I was going? I came up with 65 mph

I could be misunderstanding the question, but are you saying that it took you 3.06 seconds to go a distance of 0.038 miles?

If that's the case:

first, convert seconds into hours
3.06/60 = minutes
minutes/60 = hours

then take distance/time

0.038/whatever hours = speed