Simplify.
A. - 
B. 
C. 
D. - 
Answer: A
Mathematics
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Solve.x3 + 10x2 + 23x ? 0
A. (-?, -5 - 
] ? [0, ? ]
B. (-?, -5 - 
] ? [-5 + 
, ?)
C. [-5 - 
, -5 + 
] ? [0, ?)
D. [-5 - 
, ?)
Mathematics
Calculate the arc length of the indicated portion of the curve r(t).r(t) = (9t sin t + 9 cos t)i + (9 t cos t - 9 sin t)j ; -2 ? t ? 5
A. 189 B. 130.5 C. 261 D. 94.5
Mathematics
Solve the problem.A ball is thrown vertically upward from the top of a building 128 feet tall with an initial velocity of 112 feet per second. The distance s (in feet) of the ball from the ground after t seconds is 
After how many seconds does the ball strike the ground?
A. 10 sec B. 8 sec C. 129 sec D. 7 sec
Mathematics
Multiply.(2.1)(-4.53)
A. 6.63 B. -2.43 C. 6.73 D. -9.513
Mathematics