Solve the problem.Integrate 
over the region 0 ? x2 + y2 ? 81.
A. ?(1 - cos 81)
B. 2?(1 - cos2 9)
C. 2?(1 - cos 81)
D. ?(1 - cos2 9)
Answer: A
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Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
Find the equation of the parabola corresponding to the given information.The parabola has focus and directrix as shown.
A. y = x2
B. x = - 
y2
C. y = - 
x2
D. y = 
x2
Find all complex zeros of the polynomial function, and write the polynomial in completely factored form.f(x) = x4 + 29x2 + 100
A. f(x) = (x + 2i)2(x + 5i)2 B. f(x) = (x + 2 + 5i)2(x + 2 - 5i)2 C. f(x) = (x + 2i)(x - 2i)(x + 5i)(x - 5i) D. f(x) = (x + i)(x - i)(x + 10i)(x - 10i)
Determine the value of each variable.
= 
A. x = 6; y = 2; k = -3 B. x = 3; y = -3; k = 6 C. x = -3; y = 2; k = 3 D. x = 3; y = -2; k = -3