Here, ‘have been’ should be used instead of ‘had’. The present perfect tense should be used to indicate an action that began in the past and has lasted into the present time.
The sunglasses had a moment a few years ago, but the classic shades have been around for years.
Which of the following is a limitation of the Command and Control approach in environmental economics?
If a tax is placed on the product in this market, tax revenue paid by the buyers is the area
An economist calculated the cross-price elasticity of demand for nicknacks and gizmos and got -0.5. What can she conclude about the relationsh...
What is the value of the balanced budget multiplier?
What happens in long run under monopolistic competition?
Suppose the money supply in Mexico grows more quickly than the money supply in the USA. We would expect that
Which of the following four-firm concentration ratios is most consistent with monopolistic competition?
If coefficient of correlation rxy= 1, then
The correlation coefficient between X and -X is:
A subsidy can actually cause the consumption of a subsidized good to fall if
