Determine where the function is increasing and where it is decreasing.f(x) = -x2 + 4x
A. increasing on (2, ?)
decreasing on (-?, 2)
B. increasing on (-?, 2)
decreasing on (2, ?)
C. increasing on (-?, -2)
decreasing on (-2, ?)
D. increasing on (-2, ?)
decreasing on (-?, -2)
Answer: B
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A. 
B. 
C. 
D. 
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A. 64 B. 64? C. ? D. 256?
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A. x4 = 16 B. 4x = 16 C. 164 = x D. 16x = 4
Use Gauss-Jordan elimination to solve the linear system and determine whether the system has a unique solution, no solution, or infinitely many solutions. If the system has infinitely many solutions, describe the solution as an ordered triple involving variable z.x + 3y + 2z=114y + 9z=-12x + 7y + 11z=- 1
A. 
B. 
C. 
D. 