Solve. Then graph the solution.-x2 - 6x - 5 ? 0
A. (-?, -5] ? [-1, ?)
B. [-1, ?)
C. [-5, -1]
D. (-?, -5]
Answer: A
Mathematics
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Solve the problem.An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the curve 
- 5 ? x ? 5, about the x-axis (dimensions are in feet). If a cubic foot holds 7.481 gallons and the helicopter gets 3 miles to the gallon, how many additional miles will the helicopter be able to fly once the tank is installed (to the nearest mile)?
A. 376 B. 125 C. 94 D. 188
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Make the indicated conversion within units of time.Convert 135 seconds to minutes.
A. 1350 minutes
B. 
minutes
C. 8100 minutes
D. 2
minutes
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Solve.23 is 2% of what?
A. 1150 B. 46 C. 11,500 D. 115
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Graph the sinusoidal function using key points.y = 
cos
A. 
B. 
C. 
D. 
Mathematics