The price elasticity of demand for senior citizens purchasing coffee from McDonald's is −5, while non-senior citizens have a price elasticity of demand equal to −1.25. If it costs McDonald's $0.02 to produce a coffee, the optimal price for a cup of coffee for non-senior citizens and the resultant marginal cost under third-degree price discrimination are:.A) $0.004 and $0.02.B) $0.02 and $0.80.C) $0.10 and $0.02.D) $10 and $0.20.

Carmen’s beauty salon has estimated monthly financing requirements for the next six months as follows: january $ 9,000 april $ 9,000 february 3,000 may 10,000 march 4,000 june 5,000 short-term financing will be utilized for the next six months. projected annual interest rates are: january 9 % april 16 % february 10 may 12 march 13 june 12 what long-term interest rate would represent a break-even point between using short-term financing and long-term financing?