Solve the following equations using the quadratic formula.
A. 
B. 
C. 
D. 
E. None of these
Answer: D
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Solve the problem.According to a country's census, the population (to the nearest million) was 264 in Year 0 and 288 in Year 10. The projected population for Year 50 is 434. To construct a logistic model, both the growth and carrying capacity must be estimated. (a) Estimate r by assuming that t = 0 corresponds to Year 0 and that the population between Year 0 and Year 10 is exponential; that is, the population is given by 
Round the value of r to four decimal places, if necessary.(b) Write the solution to the logistic equation using the estimated value of r and use the projected value P(50) = 434 million to find an estimation for the value of the carrying capacity K. Round to
the nearest million. A. (a) r = -1.0087 (b) K = 254 million B. (a) r = 0.0087 (b) K = -2390 million C. (a) r = 1.0087 (b) K = -2290 million D. (a) r = -0.0087 (b) K = 154 million
Write the complex number in rectangular form.9(cos 80° + i sin 80°)
A. -0.5 - 3i B. 8.9 + 1.6i C. 0.5 + 3i D. 1.6 + 8.9i
Determine where the graph of f is below the graph of g by solving the inequality 
.f(x) = x4 - 4g(x) = x - 4
A. f(x) ? g(x) if 0 ? x ? 1 B. f(x) ? g(x) if -1 ? x ? 1 C. f(x) ? g(x) if x ? 0 or x? 1 D. f(x) ? g(x) if x ? -1 or x? 1
Complete the identity.sin (4?) sin (7?) cos (4?) cos (7?) = ?
A. cos2 (56?)
B. 
C. 
D. 