Since the creation of a social program, the percent of persons 65 years and over with a family income below the poverty level has declined. The percent can be approximated by the function P(t) = 30.16-5.83ln t, where t is the number of years since 1965. Answer parts a. through d. below. C a. Find the percent of persons 65 years and over with family income below the poverty level and the rate of change in 1970. The percent of persons 65 years and over with family income below the poverty level in 1970 was %. (Round to two decimal places as needed.) The rate of change of the percent of persons 65 years and over with family income below the poverty level in 1970 was %. (Round to four decimal places as needed.) b. Find the percent of persons 65 years and over with family income below the poverty level and the rate of change in 1990. The percent of persons 65 years and over with family income below the poverty level in 1990 was %. (Round to two decimal places as needed.) The rate of change of the percent of persons 65 years and over with family income below the poverty level in 1990 was (Round to four decimal places as needed.) c. Find the percent of persons 65 years and over with family income below the poverty level and the rate of change in 2010. The percent of persons 65 years and over with family income below the poverty level in 2010 was %. (Round to two decimal places as needed.) The rate of change of the percent of persons 65 years and over with family income below the poverty level in 2010 was %. (Round to four decimal places as needed.) d. What happens to the rate of change over time? O A. The rate of change over time is approaching ∞. OB. The rate of change over time is approaching 0. O C. The rate of change over time is approaching - ∞0.

dates, fixes, and improvements, choose Check for Updates. Solve the following: #1: A city has been losing population. In the 1990 census it decreased by 15% from the 1980 census which showed that the city had 1.2 million people. If the percent of decline is expected to continue predict the population, create a table of values for the population in 1990, 2000, 2010 and 2020. What function would generate this table? Year 1990 2000 2010 2020 Population Pop = %3D #2: Another city showed the exact opposite, its population was increasing by 15%. If in 1980 it also had 1.2 million people create a table of values for the population in 1990,2000, 2010 and 2020. What function would generate this table?

Hours. Suppose AT&T charges $6.01 for a 7-minute call to Sweden and $6.79 for an 8-minute Can to Sweden. Suppose that MCI charges $0.66 a minute plus a $1.99 overseas connection fee. a. Write a function that represents how much AT&T charges. Define your variables. b. Write a function that represents how much MCI charges. Use the same variable definitions as no. you did in part (a). c. Use an algebraic method (solve the two equations from parts (a) and (b) using substitution) to determine the length of a phone call that results in the same charge for both companies 83

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