Acollegestudentexpectstoearnatleast$1000ininterestonaninitialinvesrmentof$20000.Ifthemoneyisinvestedforoneyearatinterestcompoundedquarterly,whatistheleastannualinterestratethatwouldachievethegoal.
Answer:20000(1+r/400)^4>=1.05得出r=4.91
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