Multiply the polynomials.(x + 9)(x3 + 4x - 3)
A. x4 + 4x2 - 3x + 9
B. x4 + 9x3 + 4x2 + 33x - 27
C. x3 + 13x2 + 33x - 27
D. x4 + 9x3 + 4x2 + 39x + 27
Answer: B
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Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.-16 ? -4x + 4 < -12
A. [4, 5)
B. ?
C. (4, 5]
D. (-?, 4] ? (5, ?)
Find an equation of variation for the given situation.y varies directly as z, and y = 50 when z = 400.
A. y = -2z
B. y = 
z
C. y = 8z
D. y = - 
z
In 1999, the male population of the United States was about 133 million, and the female population was about 139 million. Assuming a Malthusian growth model with a 1.4% annual growth rate, how many more females than males will there be in 26 years? Round your answer to the nearest tenths. ?
A. 16.8 million females B. 24.3 million females C. 8.6 million females D. 4.4 million females E. 67.0 million females
In problem, use the given triangle and the following information: b =2 and c = 5. Leave the answers in fraction form.
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Find tan B. _______________________