Solve the problem.The concentration C of a certain drug in a patient's bloodstream is given by 
.a) Find the horizontal asymptote of C(t).b) Using a graphing utility, determine the time at which the concentration is highest.
Fill in the blank(s) with the appropriate word(s).
a) y = 0
b) t = 7
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For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (t + 3)i + (ln(cos t) - 3)j + 3k
A. a = (sec t tan t)T + (sec t)N B. a = (-sec t tan t)T - (sec t)N C. a = (sec t tan t)T - (sec t)N D. a = (-sec t tan t)T + (sec t)N
Solve the problem.Two ships leave a harbor together traveling on courses that have an angle of 124° between them. If they each travel 550 miles, how far apart are they to the nearest mile?
A. 971 mi B. 1942 mi C. 516 mi D. 41 mi
Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (
, 0) and (-
, 0)
B. foci at (5, 0) and (-5, 0)
C. foci at (0, 
) and (0, -
)
D. foci at (4, 0) and (-4, 0)
Provide an appropriate response.Write 4.78 × 103 in decimal notation.
A. 4780 B. 478 C. 143.4 D. 47,800