The table shows the age-adjusted death rates per 100,000 citizens for heart disease in a certain country. Complete parts (a) through (c) below.| Year | 1970 | 1972 | 1974 | 1976 | 1978 ||-------------|-------|-------|-------|-------|-------|| Death Rate | 252.7 | 241.2 | 230.3 | 219.9 | 209.9 |(a) Find an exponential model for these data, where t = 0 corresponds to the year 1970. If you do not have suitable technology, use the first and last data points to find a function. If you have a graphing calculator or other suitable technology, use exponential regression to find a function.f(t) = ☐ (Type an equation. Round to four decimal places as needed.)

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Answered: The table shows the age-adjusted death…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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This shows log GDP per capita for the UK. Which of the following statements are correct? Select one or more: a. The graph shows that in 1950 UK GDP per capita was about £8.75. b. The trend growth rate over the period was 0.9889% per annum. c. When actual output is below trend output the economy is in recession. d. The trend growth rate over the period was 2.14 % per annum.
Please answer part b
The following graph shows data regarding the population of a town in thousands. At what rate was the population changing? Population was changing at a rate of people/yr. (Type an integer or a decimal.) Population of a town (in thousands) A 200- 180- 160- 140- 120- 100- 80- 60- 40- 20- 0- 1960 1970 1980 1990 2000 2010 Year Q G
Find the exponential functions for the following data: X y -50 20000 0 24000 50 28800 100 34560 x y 0 2 10 4 20 8 30 16
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Month Sales Forecast January 1000 1043 February 3000 March 5000 April 4000 May 5000 June 6000 Compute the forecast for the month of July using simple exponential smoothing. Take alpha = 0.2
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nd Morris - Screen Shot 2021-09-27 at 11.17.04 AM.png 6-2 Practice #3 Write an exponential function for the given set of points. 1. (0, 1), (1, 5), (2, 25), (3, 125), and (4, 625) 2. (0, 2187), (1, 729), (2, 243), (3, 81), and (4, 27)
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Sunlight is absorbed in water, and as a result the light intensity in oceans, lakes, and ponds decreases exponentially with depth. The percentage of visible light -kx P (in decimal form) at a depth of x meters is given by P=e, where k is a constant related to the clarity and other physical properties of the water. The graph shows models for the open ocean, Lake Tahoe, and Lake Erie for data taken under similar conditions. Percent 0.8- 0.2- Percent of Surface Light vs. Depth -0.0491 x Ocean: P = e Tahoe: P = e -0.0799 x Depth (m) Erie: P = e -0.1980 x The euphotic depth for the open ocean is The euphotic depth is the depth at which light intensity falls to 1% of the value at the surface. This depth is of interest to scientists because no appreciable photosynthesis takes place. Find the euphotic depth for the open ocean. Round to the nearest tenth of a meter. meters. X

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