Find the focus and the directrix of the parabola.(x + 2)2 = 8(y + 1)
A. Focus: (-2, 1); directrix: x = -3
B. Focus: (-2, 1); directrix: y = -3
C. Focus: (-1, 0); directrix: y = -4
D. Focus: (-2, -3); directrix: y = 1
Answer: B
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Find the indicated part of the arithmetic sequence.Find a formula for an, given that a3 = 8 and a7 = 24.
A. an = -4n + 28 B. an = 16n - 8 C. an = 4n - 4 D. an = 4n + 4
Determine whether the relation is a function.{(-7, 7), (-7, 6), (1, 2), (5, -1), (10, -1)}
A. It is not a function. B. It is a function.
Solve the inequality. Express your answer using interval notation.-2x + 2 ? -3x + 6
A. (-?, 4]
B. (8, ?)
C. (-?, 4)
D. [4, ?)
Find all cube roots of the complex number. Leave answers in trigonometric form.-3
+ 3i
A. 
cis 50°, 
cis 170°, 
cis 290°
B. 
cis 70°, 
cis 190°, 
cis 310°
C. 
cis 70°, 
cis 190°, 
cis 310°
D. 
cis 50°, 
cis 170°, 
cis 270°