Write the complex number in the form a + bi.6(cos 330° + i sin 330°)
A. 3
+ 3i
B. -3
+ 3i
C. 3
- 3i
D. -3
- 3i
Answer: C
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane satisfying x2 + y2 ? 1; range: real numbers 0 ? z ? 1; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 1
B. Domain: all points in the xy-plane; range: real numbers 0 ? z ? 1; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 1
C. Domain: all points in the xy-plane satisfying x2 + y2 = 1; range: real numbers 0 ? z ? 1; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 1
D. Domain: all points in the xy-plane; range: all real numbers; level curves: circles with centers at 
State the end behavior of the graph of f.f(x) = x4 - 2x3 + 3x2 - 3
A. Up on both sides B. Up on left side, down on right side C. Down on left side, up on right side D. Down on both sides
Sketch the graph of the function 
using the curve-sketching guidelines.
What will be an ideal response?
Write the number in standard form.A group of astronomers detected a radio signal that originated approximately 
light years from Earth.
A. 793,800 B. 7,938,000 C. 396.9 D. 79,380