Math
posted by Frank .
the total cost for a school bus rental is 350$/day. Each bus holds 60 students. Find the cost (c) of renting the school bus as a function of the number of students going on a trip (n).
My answer:
I have come up with relating the 350$ to n/60 but i am stuck on where to go from here. Can somebody help me? Thanks.

If n is the number of students going, the cost per student per day is $350/n.
If the bus is full, the cost per student is 350/60 = $5.83.
The function is undefined for n>60.
Therefore
f(n) = $350/n, 1<n<59
f(n=60) = $5.83
f(n>60) = undefined 
Thank you very much. I wrote my question incorrectly. It should be the cost of renting buses (plural). Would that be something like 350 times n/60?