Find the domain of the polynomial or rational function. Write your answer in set-builder notation.g(x) = 
A. {x|x ? -5, 5}
B. {x|x ? -7, -5, 5}
C. {x|x ? -25, 0}
D. {x|x is a real number}
Answer: D
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Use a calculator to convert from polar to rectangular coordinates. Round to the nearest hundredth.
A. (-0.82, -2.26) B. (0.82, 2.26) C. (-2.26, -0.82) D. (2.26, 0.82)
Find all the second order partial derivatives of the given function.f(x, y) = cos (xy2)
A. 
= - y2 sin xy2; 
= 2y
; 
= 
= 2
B. 
= -y4 cos xy2; 
= - 2x[2xy2 cos (xy2) + sin(xy2)]; 
= 
=
- 2y[xy2 cos (xy2) + sin(xy2)];
C. 
= y2 sin xy2; 
= 2[2y2 cos (xy2) - sin (xy2)] ; 
= 
= 2y[y2 cos (xy2) - sin (xy2)]
D. 
= - y2 sin xy2; 
= 2[ sin (xy2)- 2y2 cos (xy2)] ; 
= 
= 2y [sin (xy2)-y2 cos (xy2)]
Divide:
Solve the problem.Luciane is driving 814 miles to get home from college. If she drives 336 miles the first day, how many miles remain?
A. 1160 miles B. 468 miles C. 478 miles D. 1150 miles