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In 2 0 1 2 , 3 4 . 1 % of all glass containers were recycled. A beverage company used 4 0 0 comma

In2012,34.1% of all glass containers were recycled. A beverage company used
400 comma 000400,000
lb of glass containers per year. After recycling, the amount of glass, in pounds, still in use after t years is given by
Upper N left parenthesis t right parenthesis equals 400 comma 000 left parenthesis 0.295 right parenthesis Superscript tN(t)=400,000(0.295)t.
a) Find
Upper N left parenthesis 4 right parenthesisN(4),
and explain its meaning.
b) Find
Upper N prime left parenthesis 4 right parenthesisN(4),
and explain its meaning.
c) When will
88%
of the original amount of glass still be in use?

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