The position vector of a particle is r(t). Find the requested vector.The velocity at t = 4 for r(t) = (8 - 4t2)i + (9t + 10)j - e-6tk
A. v(4) = 32i + 9j + 6e-24k
B. v(4) = -32i + 9j + 6e-24k
C. v(4) = -16i +9j + 6e-24k
D. v(4) = -32i + 9j - 6e-24k
Answer: B
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A. 28 B. 0 C. 8 D. 1
Set up the percent proportion, and write "unknown" for the value that is not given. Recall that the percent proportion is 
= 
. Do not try to solve for any unknowns.23 is what percent of 96?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Provide an appropriate response.Determine whether the function whose graph is shown is one-to-one. If it is, sketch the graph of its inverse used a dashed line.
A. Not one-to-one
B. One-to-one
C. One-to-one
D. One-to-one
Find the exact value under the given conditions.Given sin ? = - 
, with ? in quadrant IV, and tan ? = - 
, with ? in quadrant II. Find sec (? + ?).
A. - 
B. - 
C. - 
D. 