Determine whether the sequence converges or diverges, and, if it converges, find 
an.an = (-1)n 
A. 5
B. 0
C. 1
D. Diverges
Answer: D
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If a projectile is fired with an initial speed of  figure 1.png)
ft/s at an angle ? above the horizontal, then its position after t seconds is given by the parametric equations x =( figure 1.png)
cos?)t and y = ( figure 1.png)
sin?)t-16 where x and y are measured in feet.
Suppose a gun fires a bullet into the air with an initial speed of 1024 ft/s at an angle of 30° to the horizontal. After how many seconds will the bullet hit the ground? (a) 36 s (b) 64 s (c) 16 s (e) none of these
Find the infinite sum accurate to three decimal places.
A. -0.010 B. 0.007 C. 0.010 D. -0.007
Translate the problem to a system of equations, then solve using Cramer's Rule.Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1200 liters per hour. What is the flow in each pipe?
A. 600 liters/hr hot, 400 liters/hr cold B. 400 liters/hr hot, 600 liters/hr cold C. 720 liters/hr hot, 480 liters/hr cold D. 480 liters/hr hot, 720 liters/hr cold
Evaluate. 85
A. 390,625 B. 40 C. 262,144 D. 32,768