2. You run a catering company in DC and clients demand food services f and beverage services b. Suppose one client hosts a conference for economists and their general demand for these services can be derived from utility function U(f, b) = In(f) + b.d. Food prices have risen substantially over the last year. How much additional income (budget) would the client need to be just as happy between the original prices, and some increase in food price to P-? (Hint: You're finding compensating variation; Find the expenditure functions with P. and P; and take the difference)