18. [-/1 Points] DETAILS TANAPCALC10 6.2.056. TV Viewers: Newsmagazine Shows The number of viewers of a weekly TV newsmagazine show, introduced in the 2009 season, has been increasing at the rate of 3(3+) -1/3 (1sts 6) MY NOTES ASK YOUR TEACHER million viewers/year in its tth year on the air where t 1 corresponds to 2009. The number of viewers of the program during its first year on the air is given by 9(7/2)2/3 million. Find how many viewers were expected in the 2012 season. (Round your answer to one decimal place.) million viewers Need Help? Read It Watch It 19. [-/1 Points] DETAILS TANAPCALC10 6.2.059. Population Growth The population of a certain city is projected to grow at the rate given below. r(t) = 1200(1 4t 1+ (0 t5) 2+2 The rate is measured in people/year, t years from now. The current population is 75,000. What will be the population 3 yr from now? (Round your answer to the nearest whole number.) people Need Help? Read It Watch It 20. [-/2 Points] DETAILS TANAPCALC10 6.2.061. Life Expectancy of a Female Suppose that in a certain country the life expectancy at birth of a female is changing at the rate of 4.66856 g'(t) = (1 + 1.04t) 0.9 MY NOTES years/year. Here, t is measured in years, with t = 0 corresponding to the beginning of 1900. Find an expression g(t) giving the life expectancy at birth (in years) of a female in that country if the life expectancy at the beginning of 1900 is 44.89 years. g(t) = What is the life expectancy (in years) at birth of a female born in 2000 in that country? (Round your answer to two decimal places.) yr Need Help? Read It Watch It 21. [-/1 Points] DETAILS TANAPCALC10 6.2.067. MY NOTES AS Amount of Glucose in the Bloodstream Suppose a patient is given a continuous intravenous infusion of glucose at a constant rate of r mg/min. Then, the rate at which the amount of glucose in the bloodstream is changing at time t (in minutes) due to this infusion is given by A'(t) = = re-at mg/min, where a is a positive constant associated with the rate at which excess glucose is eliminated from the bloodstream and is dependent on the patient's metabolism rate. Derive an expression for the amount of glucose in the bloodstream at time t. Hint: A(0) = 0. A(t) = Need Help? Read It Watch It