Solve the problem.According to a country's census, the population (to the nearest million) was 251 in Year 0 and 299 in Year 10. The projected population for Year 50 is 442. 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) = 442 million to find an estimation for the value of the carrying capacity K. Round to
the nearest million.
A. (a) r = -1.0175
(b) K = 292 million
B. (a) r = -0.0175
(b) K = 192 million
C. (a) r = 0.0175
(b) K = 969 million
D. (a) r = 1.0175
(b) K = 1,069 million
Answer: C
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Solve the problem. Round to the nearest tenth of a percent unless otherwise noted. The graph below shows the number of internet host sites for five consecutive years. Find the percent increase in host sites from 2009 to 2010. Round to the nearest percent.
20082009201020112012Year
A. 67% B. 0.6700% C. 1.0200% D. 102%
Use the given table to find the probability of the indicated event. Round your answer to the nearest thousandth.College students were given three choices of pizza toppings and asked to choose one favorite. The following table shows the results.
A randomly selected student prefers a meat topping.
A. .110 B. .335 C. .328 D. .330
Use a reference angle to find the value. cos 120°
A. - 
B. - 
C. 
D. - 
Rationalize the denominator and simplify.
A. 
B. 
C. 
D. 