Solve the polynomial inequality. Express the solution in interval notation.(x + 2)(x + 1)(x - 6) < 0
A. (-2, -1) ? (6, ?)
B. (6, ?)
C. (-?, -1)
D. (-?, -2) ? (-1, 6)
Answer: D
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Solve the exponential equation using the method of "relating the bases" by first rewriting the equation in the form eu = ev.e5x - 1 = (e6)-x
A. 
B. 
C. {0}
D. 
The number line in the following graphic represents fictional net exports in billions of dollars for five countries. Net exports are obtained by subtracting total imports from total exports; a negative net export means the country imported more goods than it exported.
What is the sum of net exports for China and The United States ?
A. 0 billion dollars B. 30 billion dollars C. 10 billion dollars D. 230 billion dollars
Solve the given equation by finding the unknown value.? + 120 = 745
A. 635 B. 89,400 C. 625 D. 865
Solve the problem.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: 
How many hours of study are needed to score 87? Round to the nearest hundredth if necessary.
A. 6.03 hr B. 2.45 hr C. 101.06 hr D. 24.50 hr