What is the law that makes it illegal to charge too high of an interest?

wilson's has 10,000 shares of common stock outstanding at a market price of $35 a share. the firm also has a bond issue outstanding with a total face value of $250,000 which is selling for 102 percent of face value. the cost of equity is 11 percent while the preminustax cost of debt is 8 percent. the firm has a beta of 1.1 and a tax rate of 34 percent. what is wilson's weighted average cost of capital?

Ursus, inc., is considering a project that would have a five-year life and would require a $1,650,000 investment in equipment. at the end of five years, the project would terminate and the equipment would have no salvage value. the project would provide net operating income each year as follows (ignore income taxes.):

Agovernment receives a gift of cash and investments with a fair value of $200,000. the donor specified that the earnings from the gift must be used to beautify city-owned parks and the principal must be re-invested. the $200,000 gift should be accounted for in which of the following funds? a) general fund b) private-purpose trust fund c) agency fund d) permanent fund