Solve the equation by completing the square.x2 - 4x + 20 = 0
A. -2 ± 4i
B. 6, -2
C. 2 ± 4i
D. 4 ± 8i
Answer: C
Mathematics
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Solve the problem.How many 
pound boxes of cereal can be made from 15,300 pounds of cereal?
A. 13,770 boxes B. 17,000 boxes C. 1700 boxes D. 1530 boxes
Mathematics
Find the unit tangent vector of the given curve.r(t) = 
i + 
j - 12tk
A. T = 
i + 
j - 
k
B. T = 
i + 
j - 
k
C. T = 
i + 
j - 
k
D. T = 
i + 
j - 
k
Mathematics
Evaluate the integral.
A. 
?
B. 
?
C. 
?
D. 
?
Mathematics
Find the slope of the line and sketch the graph.-5y = -3x - 14
A. Slope: - 
B. Slope: 
C. Slope: - 
D. Slope: 
Mathematics