Solve the problem.Suppose the amount of a radioactive element remaining in a sample of 100 milligrams after x years can be described by 
How much is remaining after 114 years? Round the answer to the nearest hundredth of a milligram.
A. 133.95 mg
B. 381.71 mg
C. 26.20 mg
D. 0.26 mg
Answer: C
Mathematics
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Find the exact value of the expression.cos 40° cos 20° - sin 40° sin 20°
A. 
B. 
C. 
D. 
Mathematics
Determine whether the triangles in the given pair are congruent. If so, state the property that shows the triangles are congruent.
A. congruent; SAS B. congruent; AAS C. congruent; ASA D. not congruent
Mathematics
Graph the function.f(x) = 3ln x 
A. 
B. 
C. 
D. 
Mathematics
Evaluate f(x) at the given value of x by hand. 
; x = 2
A. - 
B. 326
C. Undefined
D. 
Mathematics