Find the flux of the vector field F across the surface S in the indicated direction.F(x, y, z) = zk , S is the surface of the sphere x2 + y2 + z2 = 25 in the first octant , direction away from the origin
A. 
?
B. 0
C. 
?
D. 
?
Answer: D
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Solve the problem with estimation, but do not use a calculator. Use rounding to make the resulting calculations simple.Estimate the cost to buy a refrigerator for $699, a stove for $759, and a dishwasher for $549.
A. $1800 B. $2100 C. $2000 D. $1900
Identify the conic that the polar equation represents. Also, give the position of the directrix.r = 
A. parabola, directrix parallel to the polar axis 3 above the pole B. parabola, directrix perpendicular to the polar axis 3 right of the pole C. hyperbola, directrix perpendicular to the polar axis 3 right of the pole D. hyperbola, directrix parallel to the polar axis 3 above the pole
Find the exact value of the expression.sin 
A. 
B. 
C. 
D. 
Convert the following.232 ounces to pounds and ounces
A. 16 lb and 8 oz B. 15 lb and 8 oz C. 14 lb and 8 oz D. 14 lb and 9 oz