Write the complex number in the form a + bi.3(cos 270° + i sin 270°)
A. 3
B. -3i
C. 3i
D. -3
Answer: B
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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; range: real numbers > 0; level curves: ellipses 
B. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
C. Domain: all points in the xy-plane except (0, 0); range: real numbers > 0; level curves: ellipses 
D. Domain: all points in the xy-plane except (0, 0); range: all real numbers; level curves: ellipses 
Use technology to calculate det A.A = 
A. 27.5509451 B. 1.81313296 C. -1.7338089 D. 2.27661021
When the following net is folded, what is the name of the resulting polyhedron? Give as complete a description as possible.
Write the quadratic equation in standard form. Determine the values of a, b, and c.5 = 3x2 + 4x
A. 0 = -3x2 + 4x + 5 a = -3, b = 4, c = 5 B. 3x2 + 4x - 5 = 0 a = 3, b = 4, c = -5 C. 0 = 3x2 - 4x - 5 a = 3, b = -4, c = -5 D. 3x2 - 4x + 5 = 0 a = 3, b = -4, c = 5