Solve the problem.Suppose that the people in a certain city are catching colds. It is observed that after one week, 40% of the people who were sick are still sick. Of the people who were well, 30% are sick after one week. Determine the proportion of people who are sick after two weeks if, at some particular time, 20% of the people are ill.
A. 0.332
B. 0.320
C. 0.668
D. 0.104
Answer: A
Mathematics
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Evaluate the integral.
A. 
sinh 
+ C
B. 4 sinh 
+ C
C. 8 sinh 
+ C
D. 2 sinh 
+ C
Mathematics
Solve the problem.Find an equation for the tangent to the curve y = 
at the point (1, 4).
A. y = 0 B. y = x + 4 C. y = 4x D. y = 4
Mathematics
Answer the following statement(s) true (T) or false (F)
Student preconceptions are formed through both in-school and out-of-school experiences.
Mathematics
Evaluate the integral by changing the order of integration in an appropriate way.
A. 
B. 
C. 1 - sin 6
D. 1 + cos 6
Mathematics