Sandra purchases 5 pounds of coffee and 10 gallons of milk per month when the price of coffee is $10 per pound. she purchases 6 pounds of coffee and 12 gallons of milk per month when the price of coffee is $8 per pound. sandra's cross-price elasticity of demand for coffee and milk is

a) 0.82, and they are substitutes.
b) 1.22, and they are substitutes.
c) -0.82, and they are complements.
d) 1.22, and they are complements

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Blue spruce corp. has the following transactions during august of the current year. aug. 1 issues shares of common stock to investors in exchange for $10,170. 4 pays insurance in advance for 3 months, $1,720. 16 receives $710 from clients for services rendered. 27 pays the secretary $740 salary. indicate the basic analysis and the debit-credit analysis.

You are in the market for a new refrigerator for your company’s lounge, and you have narrowed the search down to two models. the energy efficient model sells for $700 and will save you $45 at the end of each of the next five years in electricity costs. the standard model has features similar to the energy efficient model but provides no future saving in electricity costs. it is priced at only $500. assuming your opportunity cost of funds is 6 percent, which refrigerator should you purchase