A train track runs through a rancher's land. Each time a train runs on the track, it causes one of the rancher's cows to run away, resulting in a loss of $200 to the rancher. The following table gives the train operator's total revenue and costs per number of trains she runs through the land. Trains run Operator revenue ($) Operator costs ($) 1 350 100 700 200 3 1,050 1,400 1,750 2,100 400 4 700 1,100 1,600

The loanable funds theory is a neoclassical theory that determines the interest rate where the demand for loanable investments and supply of loanable funds intersect. To determine the interest rate, this theory employs linear regression and a demand curv…