Solve the equation.x2 + 7x - 18 = 0
A. x = -9, 1
B. x = -9, 2
C. x = 9, -2
D. x = 9, 2
Answer: B
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Solve the problem.A rock is thrown vertically upward from the surface of an airless planet. It reaches a height of 
meters in t seconds. How high does the rock go? How long does it take the rock to reach its highest point?
A. 595 m, 5 sec B. 1080 m, 10 sec C. 300 m, 5 sec D. 600 m, 10 sec
Refer to the weighted voting system 
and the Shapley-Shubik definition of power. (The five players will be called P1, P2, P3, P4, and P5.)In how many sequential coalitions is player P5 pivotal?
A. 6 B. 12 C. 36 D. 24 E. none of these
Insert <, >, or = between the pair of numbers to form a true statement.4
4.332
A. < B. = C. >
Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.
A. 
B. 7
- 1
C. 7
- 7
D. 7
+ 7