Match the equation with the surface it defines.
+ 
+ 
= 1 
A. Figure 4
B. Figure 3
C. Figure 1
D. Figure 2
Answer: C
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Solve the equation.ln(6x - 1) = ln 1 - ln (x - 1)
A. 0, 
B. 1, 
C. 
D. ?
Use the half-angle formulas to simplify the given expression.
A. 
cos 14?
B. 2 cos 14?
C. 
sin 14?
D. 2
cos 14?
Solve the problem.Let D be the region bounded below by the xy-plane, on the side by the cylinder 
and on top by the paraboloid 
. Set up the triple integral in cylindrical coordinates that gives the volume of D using the order of integration 
.
A. 
B. 
C. 
D. 
Suppose that the average adult in the United States will work x number of days (rounded to the nearest day) to earn enough to pay for all of the household's leisure activities in that year. This number can be calculated by multiplying the average percent of household income spent on leisure activities by 365 (the number of days in a year). The bar graph shows the percent of income spent in various countries of the world. Use the graph to answer the question.
In which country is the lowest percent of income spent on leisure activities? What percent is this?
A. Australia; 7.3% B. China; 94.6% C. China; 5.4% D. USA; 72.7%