Find all values of x for the given function where the tangent line is horizontal.f(x) = 

A. ± 
B. 0
C. ± 
D. 0, ± 

Answer: C

Mathematics

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Find the derivative of the function.y = log8

A.
B.  
C.  
D.  

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Plot the ordered pair in the coordinate plane. In which quadrant or on which axis does the point lie?(4, 0)

A. Quadrant III

B. x-axis

C. x-axis

D. y-axis

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Mathematics

Solve the problem.A middle school's baseball playing field is a square, 50 feet on a side. How far is it directly from home plate to second base (the diagonal of the square)? If necessary, round to the nearest foot.

A. 70 feet B. 72 feet C. 71 feet D. 78 feet

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Solve.The perimeter of a rectangle is  inches and its length is  inches. Find its width. 

A. (x2 + x + 3) in.
B. (3x2 + 4x + 10) in.
C. (3x + ) in.
D. (2x2 + 3x + 7) in.

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Mathematics