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