The polar equation of a circle is given. Give polar coordinates for the center of the circle and identify its radius.r = -4 cos ?
A. C(4, ?/2), radius = 4
B. C(2, ?), radius = 2
C. C(4, ?), radius = 4
D. C(2, ?/2), radius = 2
Answer: B
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Find the axis of symmetry of the given function.f(x) = x2 - 2x + 9
A. x = 0 B. x = -1 C. x = 1 D. x = 8
Find the indicated series by the given operation.Show that by integrating term by term the expansion of - 
, the result is the expansion for 
A. 
= x2 + 
x4 + 
x6 + 
x8 + . . .
B. 
= -x2 + 
x4 - 
x6 + 
x8 - . . .
C. 
= x2 - 
x4 + 
x6 - 
x8 + . . .
D. 
= -x2 - 
x4 - 
x6 - 
x8 - . . .
Match the correct graph to the given function. y = 
- 6
A. 
B. 
C. 
D. 
Solve.A salesman packed 3 shirts and 6 ties. With one shirt, he could wear all 6 ties. With another shirt, he could wear 5 ties. With the third shirt, he could wear only 2 ties. How many different combinations did he have?
A. 12 B. 60 C. 13 D. 32