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Quadratic Equations and Interval Notation

1. Consider the quadratic function f(x) = - x2 + 8x - 10. Determine whether there is a maximum or minimum value and find that value.
A. Minimum is - 6
B. Minimum is - 26
C. Maximum is - 26
D. Maximum is 6

2. Solve |9 - 2x| < 5 and write interval notation for the solution set.
A. (2, 7)
B. (- 7, -2)
C. (–∞, -7) union (-2, ∞)
D. (–∞, 2) union (7, ∞)

3. Solve and write interval notation for the solution set.
3x - 2 < - 14 or 3x - 2 > 7
A. (- 3, 4)
B. (- 4, 3)
C. (-∞, - 4) union (3, ∞)
D. (-∞, - 3) union (4, ∞)

See attached file for full problem description.

Solution Summary

Interval notation is investigated.

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