The loan objection deadline sets a specific by which the buyer must present a written notification to the seller stating that he/she will not be able to purchase the property due to problems related to obtaining a mortgage loan (or really any other reason, since only the buyer knows about his/her loan status). After this date, if the buyer cannot secure the mortgage loan and finish the purchase, the earnest money will be lost and must be given to the seller.
Answer: Lindsey's total investment in education is $18,000.
Since Lindsey's college will cost a total of $6000 per year for the next three years, her total investment in education will be .
The $26000 per year that's given in the question is the value of Lindsey's earnings if she chose to work at the local mall. This is the gain Lindsey foregoes in each of the three years in order to learn, and represents her opportunity cost or alternate costs.