Question 1
A company's annual revenue for the period since 2000 can be modeled by the function
where R is in millions of dollars and n = 0 corresponds to 2000. Assuming the model accurately predicts future revenue, find the year in which the revenue first exceeds $4.98 million.
◦ 2009
◦ 2010
◦ 2011
◦ 2013
Question 2
At a plant that packages bottled spring water, the water is passed through a sequence of ion-exchange filters to reduce the sodium content prior to bottling. Each filter removes 70% of the sodium present in the water passing through it. Determine the number of filters that must be used to reduce the sodium concentration from 30 parts-per-million to 7.20 parts-per-million.
◦ 7 filters
◦ 6 filters
◦ 4 filters
◦ 5 filters
Plant
The Water Cycle
Liquid Water Properties compared with n-pentane, nonpolar, non-hydrogen bonding liquid
Ocean water is layered from top to bottom
Water Molecule
plant diagram