Find the unit tangent vector of the given curve.r(t) = 
i + 
j - 12tk
A. T = 
i + 
j - 
k
B. T = 
i + 
j - 
k
C. T = 
i + 
j - 
k
D. T = 
i + 
j - 
k
Answer: A
Mathematics
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Provide an appropriate response.True or False? If x < 4 then -3x < -12.
A. True B. False
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Find the product.162(-0.001)
A. -0.0162 B. -16.2 C. -0.162 D. 1.62
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State the domain and range of the function.f(x) = 
A. domain: (-?, ?); range: (3, ?) B. domain: (0, ?); range: (-?, ?) C. domain: (-?, ?); range: (-?, ?) D. domain: (-?, ?); range: (0, 3)
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Give all possible rational zeros for the polynomial.f(x) = -2x4 + 4x3 + 5x2 + 18
A. ±1, ±2, ± 
, ± 
, ± 
, ± 
, ± 
B. ±1, ± 
, ±2, ±3, ±6, ±9, ±18
C. ±1, ± 
, ±2, ±3, ± 
, ±6, ±9, ± 
, ±18
D. ±1, ±2, ±3, ±6, ±9, ±18
Mathematics