Solve the equation in the complex number system.x2 - 12x + 61 = 0
A. {1, 11}
B. {6 - 5i, 6 + 5i}
C. {6 - 25i, 6 + 25i}
D. {6 + 5i}
Answer: B
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Find the total area of the region between the curve and the x-axis.y = 
; 1 ? x ? 4
A. 2
B. 
C. 4
D. 
Use Taylor's formula to find the requested approximation of 
near the origin.Cubic approximation to 
A. 10x + y - 50x2 - 10xy - 
y2 + 
x3 + 
x2y + 
xy2 + 
y3
B. 1 + 10x + y - 50x2 - 10xy - 
y2 + 
x3 + 
x2y + 
xy2 + 
y3
C. 1 + 10x + y - 50x2 - 10xy - 
y2 + 
x3 + 100x2y + 10xy2 + 
y3
D. 10x + y - 50x2 - 10xy - 
y2 + 
x3 + 100x2y + 10xy2 + 
y3
Provide an appropriate response.Given the rate of change f'(x) of a quantity f(x), then 
representsi) the total change of f(x) between y = a and y = b.ii)the total change of f(x) between x = a and x = b.iii) the partial change of f(x) between x = a and x = b.
A. Only ii is correct. B. Only i is correct. C. Both i and ii could be correct. D. Only iii is correct.
Solve the problem.Erika spent 
hr on her computer visiting the history channel and the discovery channel websites. She spent 
hr at the history channel website. How many hours did she spend at the discovery channel website?
A. 
hr
B. 
hr
C. 
hr
D. 
hr