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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 409 Weeks Ago, 1 Day Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
63  U.S. population growth The population N(t) (in millions) of the United States t years after 1980 may be approximated by the formula N(t) = 231e0.0103t. When will the population be twice what it was in 1980?
64Â Â Population growth in India The population N(t) (in mil- lions) of India t years after 1985 may be approximated by the formula N(t) = 766e0.0182t. When will the population reach 1.5 billion?
65  Children’s weight The Ehrenberg relation
Â
ln W = ln 2.4 + (1.84)h
is an empirically based formula relating the height h (in me- ters) to the average weight W (in kilograms) for children 5 through 13 years old.
(a)Â Â Â Express W as a function of h that does not contain ln.
Â
(b)Â Â Â Estimate the average weight of an 8-year-old child who is 1.5 meters tall.
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