Solve.
x - 3 ? 4 or 
x - 3 > 18
A. (-?, -2] ? (6, ?)
B. [2, 6)
C. (-?,?)
D. (-?, 2] ? (6, ?)
Answer: D
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Solve the problem.The function t(x) = -1.29x2 + 8.80x + 42.69 represents the temperature in Riversbend, IL from 11 P.M. on March 6, 2008 until 7 A.M. on March 7, 2008, where x is the number of hours after midnight on March 6, 2008. Determine the x-coordinate of the vertex of the graph of t(x). Then use this value in the function t(x) to estimate the maximum temperature. Round your answer for the vertex to the nearest hour. Round your answer for the temperature to the nearest degree.
A. x = 3.4; t = 57.6° B. x = 3; t = 58° C. x = -3; t = -2° D. x = 3; t = 68°
Use the formula for 
to evaluate the expression.
A. 3,628,800 B. 5 C. 725,760 D. 10
Use the frequency polygon to answer the following.The frequency polygon shows the salaries of employees of a small company.
How many employees earn $40,000 or more?
A. 8 employees B. 11 employees C. 4 employees
Perform the indicated operation.(3a2 - 5a + 6) + (9a - 5)
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