Find the principal unit normal vector N for the curve r(t).r(t) = (t2 + 8)j + (2t - 1)k
A. N(t) = - 
j + 
k
B. N(t) = - 
j + 
k
C. N(t) = 
j - 
k
D. N(t) = 
j - 
k
Answer: C
Mathematics
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Match the function with its graph.f(x) = 
A. 
B. 
C. 
D. 
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Evaluate the expression.(g ? g)(3) when f(x) = 4x - 5 and g(x) = 3x2 + 3
A. 93 B. 1725 C. 903 D. 2703
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Determine the slope and y-intercept for the equation.4x - 11y = 44
A. slope: m = 4; y-intercept: b = 44
B. slope: m = - 
; y-intercept: b = 4
C. slope: m = 
; y-intercept: b = -4
D. slope: m = 
; y-intercept: b = 11
Mathematics
Solve the inequality. Express your answer using interval notation.
> 9
A. 
or (2, ?)
B. 
C. 
or 
D. 
or (2, ?)
Mathematics