Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.f(x) = x5 + x4 + x2 + x + 9
A. 0 positive zeros, 0 negative zeros
B. 0 positive zeros, 2 or 0 negative zeros
C. 0 positive zeros, 1 negative zero
D. 0 positive zeros, 3 or 1 negative zeros
Answer: D
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Evaluate the improper integral or state that it is divergent.
A. 20 B. -20 C. 0 D. Divergent
Demographic data for a hypothetical state is given. Use the information to solve the problem. A state has 20 representatives and a population of 16 million; party affiliations are 70% Republican and 30% Democrat. If districts are drawn randomly, what would be the most likely distribution of House seats?
A. 13 Republicans, 7 Democrats B. 15 Republicans, 5 Democrats C. 14 Republicans, 6 Democrats D. 6 Republicans, 14 Democrats
Solve.6r + 3 = 45
A. 40 B. 36 C. 7 D. 4
Solve the problem.After an injection, the amount of a medication A in the bloodstream decreases with time t, in hours. Suppose that under certain conditions A is given by A(t) = 
, where Ao is the initial amount of the medication given. Assume that an initial amount of 25.0 cc is injected. According to this function, does the medication ever completely leave the bloodstream?
A. Yes B. No