Test the equation for symmetry with respect to the given axis, line, or pole.r = 6 + 2 cos ?;
the pole
A. has symmetry about the pole
B. may or may not have symmetry about the pole
Answer: B
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Find the flux of the vector field F across the surface S in the indicated direction.F = x2yi - zk; S is portion of the cone z = 3
between z = 0 and z = 2; direction is outward
A. - 
?
B. - 
?
C. 
?
D. - 
Evaluate the expression without using a calculator.log77
A. 
B. 1
C. 7
D. 0
Solve the exponential equation and approximate the result, correct to three decimal places.
= 5
A. 0.2027 B. 0.215 C. 0.2798 D. 0.3261
Solve.If the mass of an object is 2.48325 × 10-13 tons and its volume is 5.25 × 10-8 cubic feet, find the density of this object. (Use the formula D = 
and round to the nearest hundredth, if necessary.)
A. 4.73 × 10-6 tons per cubic foot B. 47.3 × 10-6 tons per cubic foot C. 4.73 × 10-5 tons per cubic foot D. 4.73 × 10-7 tons per cubic foot