Find the intercepts for the equation.
x - y = 4
A. (20, 0); (0, 4)
B. (-20, 0); (0, -4)
C. (-20, 0); (0, 4)
D. (20, 0); (0, -4)
Answer: D
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Simplify, then write in descending order.
x - 4x2 - 
x3 - 
x + 
x3
A. 
x3 - 4x2 + 
x
B. - 
x3 - 4x2 + 
x
C. 
x3 - 4x2 - 
x
D. - 
x3 - 4x2 - 
x
Use half-angle identities to find the exact value of the expression.sin (-112.5°)
A. - 
B. 
C. 
D. - 
Decide whether the relation is a function, and give the domain and range.
A. Not a function; domain: (-?, ?); range: (-?, 5] B. Not a function; domain: (-?, 5]; range: (-?, ?) C. Function; domain: (-?, ?); range: (-?, 5] D. Function; domain: (-?, 5]; range: (-?, ?)
Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex fourth roots of -16
A. 2(cos 45° + i sin 45°), 2(cos 135° + i sin 135°), 2(cos 225° + i sin 225°), 16(cos 315° + i sin 315°)
B. 
(cos 45° + i sin 45°), 
(cos 135° + i sin 135°), 
(cos 225° + i sin 225°), 
(cos 315° + i sin 315°)
C. 2(cos 90° + i sin 90°), 2(cos 180° + i sin 180°), 2(cos 270° + i sin 270°), 2(cos 360° + i sin 360°)
D.
| 16(cos 45° + i sin 45°), 16(cos 135° + i sin 135°), 16(cos 225° + i sin 225°), 16(cos 315° + i sin 315°) |