Between which pair of countries or continents listed below has real GDP per person converged the most since 1960?

In the demand equation log(Q) = a - b log(P) + b2 log(P2) + c log(I), where P is the price of the good in question, P2 is the price of a second good and I

is income, the second good must be: A. a complement for the good in question. B. a normal good. C. an inferior good. D. a substitute for the good in question.

Which term means "making decisions based on what you believe is the best combination of costs and benefits?"

a. economizing b. impulse spending c. cutting back d. motivating