How do i change a improper fraction into a decimal

Just like any other fraction, proper or improper.

Remember that a fraction is just a short way of writing a division. 
It means (the numerator) divided by (the denominator).

Just go ahead and do that division, and you'll get the decimal form
of the number, no matter whether the fraction is proper or improper.

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.