Solve the problem.The amount of a radioactive substance present, in grams, at time t in months is given by the formula 
Find the number of grams present in 2 years. If necessary, round to three decimal places.
A. 41.012
B. 4.101
C. 5,155.152
D. 515.515
Answer: A
Mathematics
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Use the Root Test to determine if the series converges or diverges.
A. Converges B. Diverges
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The abbreviation "R" means
A. rectal B. right ear C. around the clock D. Ringer's lactate
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Solve triangle ABC. If necessary, round the answer to the nearest tenth. 
A. B = 37.2°, b = 361.1 ft, c = 292 ft B. B = 37.2°, b = 30.1 ft, c = 24.5 ft C. B = 37.2°, b = 292 ft, c = 361.1 ft D. B = 36.8°, b = 289.3 ft, c = 361.1 ft
Mathematics
Use the graph to find the standard equation of the circle.
A. (x + 1)2 + y2 = 25 B. x2 + (y + 1)2 = 25 C. (x - 1)2 + y2 = 25 D. (x + 1)2 + y2 = 5
Mathematics