...Let represent the expected score for a student who studies hours for a test. Suppose and test scores must be integers.
What is the highest score the student can expect?
what happens to e^(-kt) as t gets large?
If the student does not study, what score can he expect?
If the student needs a grade of 80 to pass the class, how many hours of studying are necessary?
set P(t) = 80 and solve for t