Write an equation for the ellipse.e = 
; vertices at (0, -25), (0, 25)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point 
for ex2cos yz = 0.
A. - 2
B. 
C. - 
D. 2
Find the volume of the solid generated by revolving the region about the given axis. Use the shell or washer method.The region bounded by y = 7
, y = 7, and x = 0 about the y-axis
A. 
?
B. 
?
C. 
?
D. 
?
Solve the problems.After spending $3,050 for tables and $2,250 for chairs a convention center manager finds that the furniture cost 3% more than last year. Find the amount that he spent last year on tables and chairs. Round your answer to the nearest dollar.
A. $5,464 B. $159 C. $5,146 D. $2,320
Use cross products to determine whether the proportion is true or false.
= 
A. True B. False