Determine whether y ? ? or y ? -? as x ? -? and x ? ?.y = x3 - x4 + 4x2 - 2x + 8
A. y ? -? as x ? -?; y ? ? as x ? ?
B. y ? ? as x ? -?; y ? -? as x ? ?
C. y ? -? as x ? -?; y ? -? as x ? ?
D. y ? ? as x ? -?; y ? ? as x ? ?
Answer: C
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Solve the problem.A projectile is fired with an initial velocity of 500 feet per second at an angle of 45° with the horizontal. To the nearest foot, find the maximum altitude of the projectile. The parametric equations for the path of the projectile are x = (500 cos 45°)t, and y = (500 sin 45°)t - 16t2.
A. 1,945 feet B. 1,953 feet C. 1,969 feet D. 1,936 feet
Solve the variation problem.If the voltage V in an electric circuit is held constant, the current I is inversely proportional to the resistance R. If the current is 120 milliamperes when the resistance is 2 ohms, what is the current when the resistance is 12 ohms?
A. 720 milliamperes B. 40 milliamperes C. 714 milliamperes D. 20 milliamperes
Provide an appropriate response.Refer to the following table. Express the elevation of Location A and Location C as a positive or negative integers. 
A. Location A: 425; Location C: -221 B. Location A: 227; Location C: -221 C. Location A: 227; Location C: -75 D. Location A: 221; Location C: -227
Find fx(x, y).f(x, y) = y ln (9x + 7y)
A. fx(x, y) = y ln (9x + 7y)
B. fx(x, y) = 
C. fx(x, y) = ln (9x + 7y) + 
D. fx(x, y) = 