Solve the problem.A balloon used in surgical procedures is cylindrical in shape. As it expands outward, assume that the length remains a constant 
. Find the rate of change of surface area with respect to radius when the radius is 
(Answer can be left in terms of ?).
A. 60.2? mm2/mm
B. 60.1? mm2/mm
C. 120.2? mm2/mm
D. 120.0? mm2/mm
Answer: C
Mathematics
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Evaluate.log1/2 8
A. -3
B. 3
C. -2 ? ln (3)
D. 
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Write the expression in the standard form a + bi.
A. -1 + 2i B. -1 - 2i C. 1 + 2i D. -1 + 5i
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Solve the equation.20d2 + 41d + 20 = 0
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.x + 4 = 4
A. -8, 8 B. 8 C. No solution D. 0, 8
Mathematics