Expand the expression using the Binomial Theorem.(3x - 4y)3
A. 27x3 - 108x2y + 144xy2 - 64y3
B. 27x3 - 36x2y + 48xy2 - 64y3
C. 9x3y - 24x2y2 + 16xy3
D. 9x3y - 12x2y2 + 16xy3
Answer: A
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (7 sin 2t)i - (2 cos 2t)j + (7 csc 2t)k
A. a
= -28i - 28k
B. a
= 28i + 28k
C. a
= 8j + 28k
D. a
= -28i + 28k
Find the mistake, then find the correct answer.line 1 
- 
line 2 
What will be an ideal response?
Find the equation for the level surface of the function through the given point.f(x, y, z) = 
, (7, 2, 3)
A. 
= 
B. 
= 
C. The level surfaces cannot be determined.
D. 
= 
Match the graph to the function listed whose graph most resembles the one given.
A. square function B. square root function C. reciprocal function D. absolute value function