Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex fifth roots of -2i
A. 
(cos 45° + i sin 45°), 
(cos 117° + i sin 117°), 
(cos 189° + i sin 189°), 
(cos 261° + i sin 261°), 
B. 
(cos 54° + i sin 54°), 
(cos 126° + i sin 126°), 
(cos 198° + i sin 198°), 
(cos 270° + i sin 270°), 
C. 
(cos 54° + i sin 54°), 
(cos 126° + i sin 126°), 
(cos 198° + i sin 198°), 
(cos 270° + i sin 270°), 
D. 32(cos 54° + i sin 54°), 32(cos 126° + i sin 126°), 32(cos 198° + i sin 198°), 32(cos 270° + i sin 270°), 
Answer: C
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Solve the problem.In a computer simulation, growth in human populations threatens the population of a fictitious species, the striated perch, in North American waters. The bar graph shows the population of the striated perch for several years. The data can be modeled by 
where P is the population of that species, in millions, after t years. Use the formula to determine, to the nearest year, in what year there will be no more striated perch. 
A. year 33 B. year 35 C. year 43 D. year 45
Solve the problem.If f(x) is a differentiable function and f ' (c) = 0 at an interior point c of f's domain, and if 
for all x in the domain, must f have a local minimum at x = c? Explain.
What will be an ideal response?
Find an equation for the ellipse described.Center (0, 0); major axis horizontal with length 18; length of minor axis is 16
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Factor.5y8 - 5z8
A. 5(y4 + z4)(y2 + z2)(y2 - z2)(y + z)(y - z) B. 5(y4 + z4)(y2 + z2)(y - z) C. 5(y2 + z2)(y + z)(y - z) D. 5(y4 + z4)(y2 + z2)(y + z)(y - z)