Answer the question.Suppose that a test for a disease correctly gives positive results for 95% of those having the disease and correctly gives negative results for 90% of those who don't have the disease. Suppose also that the incidence of the disease is 1%. If a person tests positive for the disease, what is the chance that they have the disease? Find the exact percentage.
A. 8.8%
B. 13.4%
C. 95%
D. 10%
Answer: A
Mathematics
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Perform the indicated operations. Leave the result in polar form.(
)(
)
A. 
B. 
C. 
D. 
Mathematics
Write using radical notation. Then, simplify, if possible.9-3/2
A. Cannot be simplified
B. - 
C. 
D. -27
Mathematics
Solve the problem.The profit made when t units are sold, t > 0, is given by 
Determine the number of units to be sold in order for P > 0 (a profit is made).
A. t = 20 or t = 18 B. t = 38 C. t > 20 or t < 18 D. 20 < t < 18
Mathematics
Write a cost function for the problem. Assume that the relationship is linear.Marginal cost, $70; 90 items cost $7100 to produce
A. C(x) = 70x + 800 B. C(x) = 9x + 7100 C. C(x) = 70x + 7100 D. C(x) = 9x + 800
Mathematics