Use the exponential growth model, A = A0ekt, to solve, In 1980, the elderly U.S. population (65 and older) was 25.5 million. By 2010, it had grown to 40.3 million. a. Find an exponential growth function that models the data for 1980 through 2010. b. By which year, to the nearest year, will the elderly U.S.population reach 80 million?

Use the exponential growth model, A = A0ekt, to solve, In 1980, the elderly U.S. population (65 and older) was 25.5 million. By 2010, it had grown to 40.3 million. a. Find an exponential growth function that models the data for 1980 through 2010. b. By which year, to the nearest year, will the elderly U.S.population reach 80 million?

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter6: Exponential Functions And Sequences

Section: Chapter Questions

Problem 14CR

See similar textbooks

Similar questions

What is the difference between the equation for exponential growth versus the equation for exponential decay?
An investment account was opened with aninitial deposit of 9,600 and earns 7.4 interest,compounded continuously. How much will theaccount be worth after 15 years?
With what kind of exponential model would half-life be associated? What role does half-life play in these models?
Given a formula for an exponential function, is itpossible to determine whether the function grows ordecays exponentiallyjust by looking at the formula?Explain.
A scientist begins with 100 milligrams of aradioactive substance that decays exponentially. After 35 hours, 50 mg of the substance remains. How manymilligrams will remain after 54 hours?
A radiation safety officer is working with 112 grams of a radioactive substance. After 17 days, thesample has decayed to 80 grams. Rounding to fivesignificant digits, write an exponential equationrepresenting this situation. To the nearest day, whatis the half-life of this substance?
What happens to an exponential function as the values of x decreases? Will the graph ever cross the y -axis? Explain.
With what kind of exponential model would doubling time be associated? What role does doubling time play in these models?