Find the unit tangent vector of the given curve.r(t) = (1 - 2t)i + (2t - 6)j + (9 + t)k
A. T = 
i - 
j - 
k
B. T = 
i - 
j - 
k
C. T = - 
i + 
j + 
k
D. T = - 
i + 
j + 
k
Answer: C
Mathematics
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Find the limit.
A. 1
B. 
C. 0
D. No limit
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Write as a common fraction.0.85
A. 
B. 
C. 
D. 
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Your job is to prepare medications to administer to the patients on the floor. There are 5 patients taking the same medication and each is to receive 
oz. How many ounces will you need today if each patient is given two doses daily?
A. 
oz
B. 
oz
C. 15 oz
D. 3 oz
Mathematics
Solve for the base. Round to the nearest cent.Part: $8.44 Rate of decrease: 10%
A. $9.38 B. $7.60 C. $109.38 D. $8.44
Mathematics