Solve the problem.Find parametric equations for the normal line to the surface 
at the point 
A. 
B. 
C. 
D. 
Answer: B
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Find the area of the parallelogram with vertices P1, P2, P3, and P4.P1 = (7, -5, 5), P2 = (-8, 2, -7), 
, 
A. 
B. 
C. 
D. 
Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).9
+ 9i
A. 18(cos 30° + i sin 30°) B. 18(cos 60° + i sin 60°) C. 18(cos 330° + i sin 330°) D. 18(cos 300° + i sin 300°)
If the given sequence is a geometric sequence, find the common ratio.
, 
, 
, 
, 
A. 6 B. not a geometric sequence C. 2 D. 4
Answer the question.How can the graph of f(x) = 
(x + 8)2 - 1 be obtained from the graph of y = x2?
A. Shift it horizontally 8 units to the left. Shrink it vertically by a factor of 
. Shift it 1 units down.
B. Shift it horizontally 8 units to the right. Stretch it vertically by a factor of 2. Shift it 1 units up.
C. Shift it horizontally 8 units to the left. Shrink it vertically by a factor of 2. Shift it 1 units down.
D. Shift it horizontally 8 units to the right. Shrink it vertically by a factor of 
. Shift it 1 units down.