Problem
Susan is trying to decide whether or not to attend college during the next 12-week session. She has the following options:
• Attend college full-time at a cost of $1,200.
• Attend college part-time at a cost of $600 and work part-time earning $1,900.
• Work full-time earning $4,800.
What is Susan's incremental profit if she chooses option 3 over option 2?