p is the price per unit in dollars and q is the number of units. The monthly demand function is 
and the supply function before taxation is 
. Find what tax per item will maximize the
total revenue and use this to find the maximum tax revenue.
?
A. $3,780
B. $840
C. $3,360
D. $2,160
E. $2,820
Answer: C
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Identify the element specified for the matrix.
a51
A. Does not exist B. 9 C. -7 D. -8
Perform the indicated operation and simplify.
A. 
B. 
C. 
D. 
E. 
Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(5x - 4)
A. y = cot u; u = 5x - 4; 
= - 5 csc2(5x - 4)
B. y = cot u; u = 5x - 4; 
= - 5 cot(5x - 4) csc(5x - 4)
C. y = cot u; u = 5x - 4; 
= - csc2(5x - 4)
D. y = 5u - 4; u = cot x; 
= - 5 cot x csc2 x
In the bar graphs below, a projection of population by age groups and gender for two different countries is given as a percent of the country's population at the time. Provide an appropriate response.Population Pyramids for Countries A and B: 2006 and 2050
Which country has a much higher future projection for the 80+ age group? Explain this trend.
A. Country A possibly due to increased life expectancy. B. Country A possibly due to famine. C. Country B possibly due to increased life expectancy. D. Country B possibly due to famine.