Solve the problem.The electric charge q (in C) passing a given point in a circuit is given by 
where t is the time (in s). Find the current i (in A) for 
A. 1.1 A
B. 2.2 A
C. 0.64 A
D. 2.0 A
Answer: D
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Solve the problem.Find the center of mass of the lamina in the first quadrant bounded by the coordinate axes and the curve 
if 
.
A. 
= 
, 
= 
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Check the addition. If the answer is incorrect, find the correct answer.
2115
A. Incorrect; should be 2195 B. Incorrect; should be 2105 C. Incorrect; should be 2095 D. Correct
Solve, giving the correct solution to four decimal places.9x = 22
A. {0.7100} B. {2.4444} C. {1.8938} D. {1.4068}
Solve the problem.A cancer patient undergoing chemotherapy is injected with a particular drug. The function 
gives the number of milligrams D of this drug that is in the patient's bloodstream h hours after the drug has been administered. How many milligrams of the drug were injected? To the nearest milligram, how much of the drug will be present after 2 hours?
Fill in the blank(s) with the appropriate word(s).