Find the principal square root of the number. Approximate the answer to the nearest hundredth whenever appropriate.(xy)2, xy < 0
A. 2xy
B. -xy, xy
C. xy
D. -xy
Answer: D
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Find the indicated derivative. Assume that x is restricted so that ln is defined.g'(x) if g(x) = ln(2x + 
)
A. 
B. 
C. 
D. 
Perform the indicated operation.(-7x6 + 8x8 + 4 - 2x7) - (-6 + 9x7 + 3x8 - 9x6)
A. 11x8 + 7x7 - 16x6 + 10 B. 5x8 + 7x7 - 16x6 - 2 C. 11x8 + 7x7 - 16x6 - 2 D. 5x8 - 11x7 + 2x6 + 10
Use the trapezoidal rule to find the area.A pool was measured every 1.50 yd. The distances across the pool (in yards) are given in the diagram. Find the area.
A. 33.2 yd2 B. 35.5 yd2 C. 50.4 yd2 D. 53.8 yd2
If the given graph is Eulerian, find an Euler circuit in it. If it is not Eulerian, first Eulerize it and then find an Euler circuit. 
A. H, G, F, E, A, D, C, B, A B. A, B, C, D, A, E, F, G, H, F, E, A C. Add edge CG; C, G, H, F, E, A, B, C, D D. Add edge EF; A, B, C, D, A, C, H, E, F, G, H, F, E, A