I am in need of some serious homework help!

A high speed passenger test train travels from Columbia station to Penn station in exactly 8 hours. The distance traveled in miles from Columbia, at any given time in hours is given by the following function: s(t)=6t^3+72t^2.

How many miles has the train traveled in 2 hour into the trip?

What is the distance in miles from Columbia station to Penn Station?

Your Right this is an error. It should be a negative

A high speed passenger test train travels from Columbia station to Penn station in exactly 8 hours. The distance traveled in miles from Columbia, at any given time in hours is given by the following function:

s(t)= - 6t^3+72t^2.

How many miles has the train traveled in 2 hour into the trip?

What is the distance in miles from Columbia station to Penn Station?