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College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter4: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 11T: Suppose that $12,000 is invested in a saving account paying 5.6% interest per year. (a)Write the...
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The exponential function fix) = 543(1.032)" models the population of a country, fx), in millions, x years after 1972. Complete parts (a) - (0).
a. Substitute 0 for x and, without using a calculator, find the country's population in 1972.
The country's population in 1972 wasO million.
b. Substitute 22 for x and uso your calculator to find the country's population, to the nearest million, in the year 1994 as modeled by thie function
The country's population in 1994 was million,
c. Find the country's population, to the nearest million, in the year 2016 as predicted by this function.
The country's population in 2016 will be Omillon.
d. Find the country's population, to the nearest millon, in the year 2038 as predicted by this function.
The country's population in 2038 wili be million
e. What appears to be happening to the country's population every 22 years?
OA tappears that the population is decreasing by a factor of every 22 yoars.
O 8. There does not appear to be a pattern,
Oc. It appears that the population is growing by a factor of 2 every 22 yoars.
OD. It appears that the population is growing by a factor of 3 every 22 years.
Transcribed Image Text:The exponential function fix) = 543(1.032)" models the population of a country, fx), in millions, x years after 1972. Complete parts (a) - (0). a. Substitute 0 for x and, without using a calculator, find the country's population in 1972. The country's population in 1972 wasO million. b. Substitute 22 for x and uso your calculator to find the country's population, to the nearest million, in the year 1994 as modeled by thie function The country's population in 1994 was million, c. Find the country's population, to the nearest million, in the year 2016 as predicted by this function. The country's population in 2016 will be Omillon. d. Find the country's population, to the nearest millon, in the year 2038 as predicted by this function. The country's population in 2038 wili be million e. What appears to be happening to the country's population every 22 years? OA tappears that the population is decreasing by a factor of every 22 yoars. O 8. There does not appear to be a pattern, Oc. It appears that the population is growing by a factor of 2 every 22 yoars. OD. It appears that the population is growing by a factor of 3 every 22 years.
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