Solve the inequality. Write the solution set in interval notation.(x + 5)(x + 4) > 0
A. [-5, -4]
B. (-?, -5] ? [-4, ?)
C. (-5, -4)
D. (-?, -5) ? (-4, ?)
Answer: D
Mathematics
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Solve the problem.Does the graph of the function y = tan x - x have any horizontal tangents in the interval 
If so, where?
A. Yes, at x = 
, x = 
B. Yes, at x = ?
C. No
D. Yes, at x = 0, x = ?, x = 2?
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Find the exact value using a double-angle identity.sin(480°)
A. - 
B. 
C. -1
D. 
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Convert the units using two or three unit fractions.6 wk = 
min
A. 60,480 B. 10,080 C. 43,200 D. 30,240
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Use the graph to solve the equation and the inequality.y1 = y2y1 < y2(y1: dashed line, y2: solid line)
A. 0; {x
}
B. -1; {x
}
C. -1; {x
}
D. 7; {x
}
Mathematics