Simplify and reduce to lowest terms.
- 
A. 6
B. 
C. 
D. 
Answer: B
Mathematics
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Find the vertex, the focus, and the directrix of the parabola.x2 - 8x - 4y + 28 = 0
A. V: 
; F: (4, 7); D: y = 1
B. V: 
; F: (4, 2); D: y = 4
C. V: (- 4, 3); F: (4, 4); D: y = 2
D. V: 
; F: (4, 4), D: y = 
Mathematics
Solve and graph the solutions.|x - 9| < 15
A. 
B. 
C. 
D. 
Mathematics
Find the indicated roots. Write the answer in a + bi form.Cube roots of 8
A. 2, 1 + 
i, 1 - 
i
B. 2, -1 - 
i, 1 - 
i
C. 2, -1 + 
i, -1 - 
i
D. 2, 1 + 
i, -1 - 
i
Mathematics
Choose the graph of the given parametric equations.x = 3 sin3 t, y = 3 cos3 t
A. 
B. 
C. 
D. 
Mathematics