Give a verbal representation for the given function. f(x) = 
+ 4. Let y = f(x).
A. To obtain y: Add 4 to the opposite of x.
B. To obtain y: If x is positive or equal to zero, add 4 to x. If x is negative, add 4 to the opposite of x.
C. To obtain y: Add 4 to x.
D. To obtain y: Multiply x by -1, then add 4 to the result.
Answer: B
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 
for r(t) = 2 sec2(t)i - 2 tan(t)j + 9t2k
A. v
= 8i + 4j - 
?k
B. v
= -4j + 
?k
C. v
= 8i - 4j + 
?k
D. v
= -4j - 
?k
Write as an improper fraction.6
A. 
B. 
C. 
D. 
The system cannot be solved by matrix inverse methods. Find a method that could be used and then solve the system.-2x1 + 6x2 = 46x1 - 18x2 = 12
A. No Solution B. x1 = 2t + 6, x2 = t for any real number t C. x1 = 3t + 2 for any real number t, x2 = 0 D. x1 = 3t + 2, x2 = t for any real number t
Match the given graph with its polynomial function.
A. f(x) = -x4 + x2 - 3x - 4 B. f(x) = 2x4 - x2 + 4 C. f(x) = -x3 - x - 4 D. f(x) = 2x3 + x2 - 3x + 4