Add or subtract.(3x2y - 5xy + 5xy2) - (2xy - 5xy2 + 6x2y)
A. -3x2y - 10xy2 - 7xy
B. -3x2y + 10xy2 - 7xy
C. 2x2y + 5xy2 - 7xy
D. -3x2y - 10xy2 - 3xy
Answer: B
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Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = 3xy2i + 3x2yj + 2xyk ; D: the region cut from the solid cylinder x2 + y2 ? 9 by the planes z = 0 and 
A. 486?
B. 
?
C. 243?
D. 972?
Factor out the greatest common factor.x2(x - 2) - (x - 2)
A. (x - 2)(x2 + 1) B. x2(x - 2) C. (x3 - 2x2) - (x - 2) D. (x - 2)(x2 - 1)
Solve the right triangle; angle C is the right angle. Round to the nearest tenth where necessary.c = 8, B = 66°
A. A = 24°, a = 3.6, b = 8.8 B. A = 24°, a = 3.3, b = 7.3 C. A = 24°, a = 19.7, b = 8.8 D. A = 24°, a = 8.8, b = 19.7
Establish the identity.sec u + tan u = 
What will be an ideal response?