A construction manager just starting in private practice needs a van to carry crew and equipment. She can lease a used van for $3,576 per year, paid at the beginning of each year, in which case maintenance is provied. Alternatively, she can buy a used van for $6,461 and pay for maintenance herself. She expects to keep the van for three years at which time she could sell it for $1,437. What is the most she should pay for uniform annual maintenance to make it worthwhile to buy the van instead of leasing it, if her MARR is 20%

David paid $975,000 for two beachfront lots in coastal south carolina, with the intention of building residential homes on each. two years later, the south carolina legislature passed the beachfront management act, barring any further development of the coast, including david's lots. when david files a complaint to seek compensation for his property, south carolina refuses, pointing to a passage in david's own complaint that states "the beachfront management act [was] properly and validly designed to south carolina's " is south carolina required to compensate david under the takings clause?