Simplify the expression. Assume that all variables represent positive real numbers.
A. 
B. 5x
C. -5x
D. 
Answer: D
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Provide an appropriate response.Rewrite the following imaginary number using the letter i: 
Fill in the blank(s) with the appropriate word(s).
Write the equation of the circle in standard form. Find the center and radius. Then sketch the graph.x2 + y2 - 12x + 32 = 0
A. (x + 6)2 + y2 = 4
(h, k) = (-6, 0), r = 2
B. (x - 6)2 + y2 = 4
(h, k) = (6, 0), r = 2
C. x2 + (y - 6)2 = 4
(h, k) = (0, 6), r = 2
D. x2 + (y + 6)2 = 4
(h, k) = (0, -6), r = 2
Find the solution set for the equation.|2x + 1| - 8 = -13
A. 
B. 
C. ?
D. 
For the complex number, state the real part, the imaginary part, and identify the number as real, pure imaginary, or nonreal complex.-8i
A. Real part: 0; Imaginary part: -8; Pure imaginary B. Real part: 0; Imaginary part: -8; Real C. Real part: -8; Imaginary part: i; Pure imaginary D. Real part: -1; Imaginary part: 8; Pure imaginary