Solve the problem.Suppose that $11,000 is invested at an interest rate of 5.4% per year, compounded continuously. What is the doubling time?
A. 12.8 yr
B. 11.8 yr
C. 13.8 yr
D. 2 yr
Answer: A
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Identify the equation as either an identity or not.sin 2x sin 2y = cos2(x + y) - cos2(x - y)
A. Not an identity B. Identity
Solve the equation first by clearing the fractions.- 
= y - 
A. - 
B. - 
C. 
D. 
Place the correct symbol, < or >, in the blank between the whole numbers.0 
35
A. > B. <
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856