Match the equation with the surface it defines.- 
+ 
+ 
= 1 
A. Figure 2
B. Figure 3
C. Figure 4
D. Figure 1
Answer: B
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Test the equation for symmetry with respect to the given axis, line, or pole.r = 4 + 4 sin ?; polar axis
A. Symmetric with respect to the polar axis B. May or may not be symmetric with respect to the polar axis
The rectangular coordinates of a point are given. Find polar coordinates for the point.(0, 2)
A. (2, 0)
B. 
C. (2, ?)
D. 
Find the center and radius of the circle.(y + 8)2 = 36 - (x + 2)2
A. Center: (-2, -8); radius: 6 B. Center: (8, 2); radius: 36 C. Center: (2, 8); radius: 6 D. Center: ( -8, -2); radius: 36
Solve the problem.One year ago, Tony and May bought a house. Today it is valued at $115,088, down 5% from the amount they paid. How much did they pay for the house?
A. $121,135 B. $122,145 C. $121,145 D. $121,045