Please help!! Don't know how to deal with the equity and debt. and tax

In response to the gates malaria forum in october 2007, countries are debating the pros and cons of eradication. dr. arata kochi of the world health organization believes that with enough money malaria cases could be cut by 90 percent, but he believes that it would be very expensive to eliminate the remaining 10 percent of cases. he concluded that countries should not strive to eradicate malaria. source: the new york times, march 4, 2008 draw a marginal cost curve that is consistent with dr. kochis opinion as reported above. draw a marginal benefit curve that is consistent with dry. kochis opinion as reported above. draw a point to show the quantity of malaria eradicated that achieves allocative efficiency.

Which value describes the desire to be one’s own boss? a. autonomy b. status c. security d. entrepreneurship

Pennewell publishing inc. (pp) is a zero growth company. it currently has zero debt and its earnings before interest and taxes (ebit) are $80,000. pp's current cost of equity is 10%, and its tax rate is 40%. the firm has 10,000 shares of common stock outstanding selling at a price per share of $48.00. refer to the data for pennewell publishing inc. (pp). pp is considering changing its capital structure to one with 30% debt and 70% equity, based on market values. the debt would have an interest rate of 8%. the new funds would be used to repurchase stock. it is estimated that the increase in risk resulting from the added leverage would cause the required rate of return on equity to rise to 12%. if this plan were carried out, what would be pp's new value of operations? a. $484,359 b. $521,173 c. $584,653 d. $560,748 e. $487,805