Lashell is taking her psychology final exam in which multiple-choice questions are
worth 10 points and free-response questions are worth 15 points. It takes 3 minutes
to answer each multiple choice question and 6 minutes to answer free-response
questions. The total time allowed is 60 minutes and she will not answer more than
16 questions. Assuming all of her answers are correct, she would like to find the
maximum score she can get from the exam.
When formulating this problem as a linear programming model, what are the
variables?