Solve.A physician orders 0.4 mg of a medication to be taken once daily. How many micrograms of medication are there in the daily dose?
A. 0.004 mcg
B. 40 mcg
C. 0.0004 mcg
D. 400 mcg
Answer: D
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 
for r(t) = (10t - 5t3)i + 2tan(3t)j + e3tk
A. a
= - 
?i - 72j + 9e1/4?k
B. a
= - 
?i - 72j + 9k
C. a
= - 
?i + 72j + 9e1/4?k
D. a
= 
?i + 72j + 9e1/4?k
Solve the problem.Given the acceleration, initial velocity, and initial position of a body moving along a coordinate line at time t, find the body's position at time t.a = sin 4t + 20, v(0) = - 
, s(0) = 9
A. s = - 
sin 4t + 10t2 + 9
B. s = - 
sin 4t - 10t2 + 9
C. s = - 
cos 4t + 10t2 + 9
D. s = 
cos 4t + 10t2 + 9
Solve the problem.The function 
can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams (to two decimals) will be present after 
A. 5.8 mg B. 491.38 mg C. 0.27 mg D. 0.16 mg
Add or subtract. Express the answer as a mixed number.13
+ 15
A. 29
B. 28
C. 27
D. 13