Solve the problem.A basketball fieldhouse seats 15,000. Courtside seats cost $9, endzone seats cost $7, and balcony seats cost 
The total revenue for a sellout is $81,000. If half the courtside seats, half the balcony seats, and all the endzone seats are sold; then the total revenue is $47,500. How many of each type of seat are there?
A. 3000 courtside, 4000 endzone, 8000 balcony
B. 3200 courtside, 1800 endzone, 10,000 balcony
C. 3000 courtside, 2000 endzone, 10,000 balcony
D. 4000 courtside, 3000 endzone, 8000 balcony
Answer: C
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Find all the first order partial derivatives for the following function.f(x, y, z) = ln (xy)z
A. 
= - 
; 
= - 
; 
= ln (xy)
B. 
= z ln 
; 
= zln
; 
= ln (xy)
C. 
= 
; 
= 
; 
= ln (xy)
D. 
= 
; 
= 
; 
= z ln (xy)z-1
Find the present value. Round to the nearest cent.
A. $4182.06 B. $19,802.32 C. $1931.84 D. $1817.94
Find the rule that defines each piecewise-defined function.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Plot the ordered pair in the Cartesian plane, and state in which quadrant or on which axis it lies.(4, -6)
A. Quadrant I
B. Quadrant II
C. Quadrant III
D. Quadrant IV