How to solve it and answer

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

Can someone pls ! pls answer all. no explanation needed..