Factor using the formula for the sum or difference of two cubes.27x + x4
A. x(27 + x3)
B. x(3 - x)(9 + 3x + x2)
C. (3x + x2)(9 - 3x + x2)
D. x(3 + x)(9 - 3x + x2)
Answer: D
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A statement is made about correlation. State whether the correlation is positive or negative and whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause.Over the last 10 years in this town, as the amount of open space has decreased, consumer spending has increased.
A. Negative correlation; direct cause B. Negative correlation; common underlying cause C. Positive correlation; common underlying cause D. Positive correlation; direct cause
Use FOIL to multiply.(x - 2)(x + 10)
A. x2 - 8x + 20 B. 2x - 20 C. 2x2 + 20 D. x2 + 8x - 20
Solve the problem.Find the difference in altitude between a mountain 3225 feet above sea level and an ocean floor 71 feet below sea level.
A. 3154 feet B. 3296 feet C. -3154 feet D. -3296 feet
Solve the inequality. Express your answer using interval notation. Graph the solution set.|x + 2| ? 0
A. (-?, 2) ? (2, ?)
B. (-?, -2) ? (-2, ?)
C. -2
D. (-?, ?)