Perform the indicated operation where possible.
- 
A. 
B. Not defined
C. 
D. 
Answer: B
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Find all the first order partial derivatives for the following function.f(x, y, z) = ln (xy)z
A. 
= 
; 
= 
; 
= z ln (xy)z-1
B. 
= 
; 
= 
; 
= ln (xy)
C. 
= z ln 
; 
= zln
; 
= ln (xy)
D. 
= - 
; 
= - 
; 
= ln (xy)
Perform the indicated operations, expressing the answer in simplest form with rationalized denominators.
A. 2
B. 2x2y2
C. 2x2y2
D. 4x4y4
Subtract.-1 - 2 - 11
A. 14 B. 12 C. -14 D. -12
Earnings and gender According to the U.S. Bureau of the Census, the relation between the average annual earnings of males and females with various levels of educational attainment can be modeled by the function F = 0.56 M + 6.743 where M and F represent the average annual earnings (in thousands of dollars) of males and females, respectively. When the average annual earnings for males reach $75,000, what does the equation predict for the average annual earnings for females? Round your answer to the nearest cent.
a. $133,935.31 b. $42,000.00 c. $48,743.00 d. $44,806.74 e. $39,206.74