Identify where f is increasing and where f is decreasing.f(x) = -5x - 2
A. increasing: [-2, ?); decreasing: (-?, -2]
B. increasing: (-?, ?); decreasing: never
C. neither
D. increasing: never; decreasing: (-?, ?)
Answer: D
Mathematics
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Write interval notation.{ x ? x > 6 }
A. (-?, 6) B. [6, ?) C. (-?, 6] D. (6, ?)
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Evaluate as instructed.Use f(x) = 2x + 10 and g(x) = x2 + 3 to evaluate (g/f)(-2).
A. 
B. 42
C. 
D. 13
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Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation.3x2 - 5x ? 8
A. (-?, -1] ?
B. (-?, -1) ? 
C. 
D. 
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Solve.Five divided by the sum of a number and 9, minus the quotient of 3 and the difference of the number and 9 is equal to 6 times the reciprocal of the difference of the number squared and 81. What is the number?
A. 39
B. -33
C. 12
D. - 
Mathematics