Solve.x2 - 9x + 20 > 0
A. (5, ?)
B. (4, 5)
C. (-?, 4) ? (5, ?)
D. (-?, 4)
Answer: C
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Determine whether the argument is valid or invalid.The Rams will be in the playoffs if and only if Ozzie is an all-star. Mark loves the Rams or Ozzie is an all-star. Mark does not love the Rams. Therefore, the Rams will not be in the playoffs.
A. Valid B. Invalid
Find the unknown number in the proportion. Round answer to the nearest hundredth when necessary.
= 
A. x = 361.0 B. x = 1.0 C. x = 12 D. x = 9
Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range.y = -2x2 + 6x - 5
A. D: all real numbers; R: (y ? -0.5) B. D: (x ? 1.5), R: all real numbers C. D: (x ? 1.5), R: (y ? -5) D. D: all real numbers; R: (y ? -0.5)
Determine whether the improper integral converges or diverges, and if it converges, find its value.
