Rewrite the expression with a positive rational exponent. Simplify, if possible.(4p1/5q-1)1/2
A. 
B. 4p1/10q1/2
C. 
D. 2p1/10q1/2
Answer: C
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Solve the system of equations.
A. x = 3z + 1, and y = z - 3, where z is any real number or {(x, y, z) |x = 3z + 1, and y = z - 3, where z is any real number} B. x = -3 - z, and y = 3z + 1, where z is any real number or {(x, y, z) |x = -3 - z, and y = 3z + 1, where z is any real number} C. x = z + 3, and y = 3z + 1, where z is any real number or {(x, y, z) |x = z + 3, and y = 3z + 1, where z is any real number} D. inconsistent
Simplify the expression. Assume that all variables are positive when they appear.
A. 3x2y
B. 9x2y
C. 63xy
D. 3x4y2
Solve the equation.-5x + 5(-2x - 4) = -27 - 8x
A. - 1
B. 1
C. 
D. 
Find the area of the surface obtained by rotating the circle 
about the line y=8. Select the correct answer.
