Find the center, foci, and vertices of the ellipse.3x2 + 5y2 - 18x + 70y + 257 = 0
A. 
+ 
= 1
center: (3, -7); foci: (4.4, -7), (1.6, -7); vertices: (5.2, -7), (0.8, -7)
B. 
+ 
= 1
center: (-3, 7); foci: (-1.6, 7), (-4.4, 7); vertices: (-5.2, 7), (-0.8, 7)
C. 
+ 
= 1
center: (-3, 7); foci: (-1.6, 7), (-4.4, 7); vertices: (-5.2, 7), (-0.8, 7)
D. 
+ 
= 1
center: (3, -7); foci: (4.4, -7), (1.6, -7); vertices: (5.2, -7), (0.8, -7)
Answer: A
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Solve the equation.16x2 = 25
A. 
B. 
C. 
D. 
Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: portion of the sphere x2 + y2 + z2 = 81 that lies in the first octantDensity: constant
A. 
B. 
C. 
D. 
Match the given function to its graph.1) y = 1 + sin x2) y = 1 + cos x3) y = -1 + sin x4) y = -1 + cos xA B
CD
A. 1B, 2D, 3C, 4A B. 1A, 2B, 3C, 4D C. 1A, 2D, 3C, 4B D. 1A, 2C, 3D, 4B
Find the product. Write your answer in simplest form.
? 
A. 
B. 
C. 
D. 