The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (4t - 3t3)i + 4tan(2t)j + e5tk
A. a
= - 
?i - 64j + 25k
B. a
= 
?i + 64j + 25e5/8?k
C. a
= - 
?i + 64j + 25e5/8?k
D. a
= - 
?i - 64j + 25e5/8?k
Answer: C
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Solve the problem.A water tank is formed by revolving the curve y = 6x4 about the y-axis. Water drains from the tank through a small hole in the bottom of the tank. At what constant rate does the water level, y, fall? (Use Torricelli's Law: dV/dt = -m
.)
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Solve.Given 2.3 inches is one side of a golden rectangle, find the length of the other side. Notice that the other side could be either longer or shorter than the given side. Use the approximation 
A. 3.73 in. or 1.42 in. B. 6.03 in. or 0.88 in. C. 3.73 in. or 0.70 in. D. 6.03 in. or 1.14 in.
Simplify the expression, if possible.log17 
A. 
B. - 2
C. 2
D. - 
Solve the problem.If the given figure goes through a 90° clockwise rotation about P, followed by a 90° counterclockwise rotation of the resulting figure about Q, find the final image.
A. 
B. 
C. 
D. 