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. 54.409
B. 527.803
C. 5278.032
D. 5.441
Answer: A
Mathematics
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A. 11 B. 24 C. 18 D. 32
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Evaluate the expression.4 tan2 0° - 5 sin2 180° + 6 csc2 270°
A. 6 B. 10 C. -6 D. 1
Mathematics
Solve the equation.-3x + 9 + 5 = -2(x - 3)
A. {8} B. {2} C. {- 17} D. {- 8}
Mathematics
Use a calculator to find the approximate value of the composition. Round your answer to four decimal places. The expression may be undefined.cos-1 (cos (-0.9372))
A. -0.4686 B. 0.4686 C. -0.9372 D. 0.9372
Mathematics