Solve the problem.A bacterial culture grows exponentially; that is, P(t) = 100ekt, where P(t) is the size of the culture at time t hours. Suppose that after 2 hours the size of the culture is 400. What is k (approximately)?
A. 0.48
B. 0.69
C. 3
D. 0.06
E. none of these
Answer: B
Mathematics
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The data in the figure below represents the annual salaries of 120 professional mathematicians.
The median salary of this group of mathematicians is approximately
A. $70,000. B. $40,000. C. $60,000. D. $50,000. E. none of these
Mathematics
Change the decimals to their fraction or mixed-number equivalents, and reduce answers to lowest terms.0.64
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Find the future value of a CD paying a 3.6% APR compounded continuously if you invest $3000for a term of 1000 days. Round your answer to the nearest dollar.
A. $3325 B. $3316 C. $3311 D. $3318 E. $3305
Mathematics
Solve the equation.
x+1= 
x-1
A. 
B. 
C. 
D. 
Mathematics