Levels Tought:
Elementary,Middle School,High School,College,University,PHD
Teaching Since: | Apr 2017 |
Last Sign in: | 290 Weeks Ago, 1 Day Ago |
Questions Answered: | 352 |
Tutorials Posted: | 351 |
MBA,PHD in Psychology
Northwest Florida State College
Jun-1992 - May-1997
Professor
Northwest Florida State College,
Aug-2006 - Nov-2015
8.22Â Â Â Â Lorraine can select from two nutrient injection systems for her cottage-industry hydroponics tomato and lettuce greenhouses.
a.   Use an AW relation to determine the minimum number of hours per year to operate the pumps that will justify the Auto Green system, if the MARR is 10% per year.
b.   Which pump is economically better, if it oper- ates 7 hours per day, 365 days per year?
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