The figure above shows Kaley's marginal benefit from swimming with manatees and Scott's marginal cost of providing manatee swimming tours. For Kaley and Scott, allocative efficiency is achieved at what point?
A) A
B) B
C) C
D) D
E) Either point A or point D
C
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A reference dose (RfD) measures the amount of a
a. a pollutant one can be exposed to over a year without harm b. a hazard one can be exposed to over a year before dying c. an environmental hazard one can be exposed to over a lifetime before dying d. all of the above e. none of the above
Nancy paid a tax of $0.50 on the last dollar she earned in 1999 . Nancy's marginal tax rate in 1999 was
a. more than 50 percent. b. exactly 50 percent. c. higher than her average tax rate. d. lower than her average tax rate.
If the slope of a curve is 1/3, we know that
A) the relationship is linear, and the line moves from lower left to upper right. B) the relationship is non-linear, and the line moves from lower left to upper right. C) the relationship is linear, and the line moves from upper left to lower right. D) the relationship is non-linear, and the line moves from upper left to lower right.
Which of the following is a way in which Social Security benefits could be cut?
A. An increase in the rate of inflation B. A smaller penalty for early retirement C. An increase in the payroll tax rate D. A higher retirement age