After the Hawaiian goose, or nene, was placed on the endangered species list, its population began to increase after reaching a critically low number. The number of nene N(t) in Hawaii t years after 1973 can be approximated by Upper N left parenthesis t right parenthesis equals 352 left parenthesis 1.057 right parenthesis Superscript tN(t)=352(1.057)t, where tequals=0 corresponds to 1973. a) How many nene were in Hawaii in 1973? in 2003? in 2013?