1105_A5_Solutions_F11 - 5 o v-ho s Name MAC110S Activity S...

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MAC110S Fall, 2011 Showalgebr 1. The table of the n January 1 calendar year 1960 1970 1980 1990 2000 a) User sho shoul y=- b) Use a thous *Enter th make a graph, an label the' See. A\oo ~;~ \Nt.(t O'(~'" Activity S Name: 5 o( v .... -ho'(\ s Period: (circle yours). TH 11:00 J1{ TH 12:30 TH 2:00 x o 10 20 30 40 Americans OverlOO N (thousands) 3 5 15 37 75 aic details in spaces provided, and confirm answers with the calculator. N ~u 80 40 30 20 10 x 10 10 20 30 40 50 6 10 and graph show N, the number of Americans (in thousands) over 100 years old as a function umber of years since 1960. That is, x = 0 represents January 1of 1960, x = 10repr y sents ~ , 1970, and so on. ,,~~q; '" ~~ ~} I \}"") \..o( oJ' f'~ (F if'~' 70 7", ~ .e,-(\~.(" ~~60~. -------+-~~1;50 1"- (33.'lWIf'tb2.) s) -) I I Years Since 1960 egression to find a cubic polynomial model for the data. Do not round off. .. record all digits wn by the calculator. Calculator output that uses scientific notation (like 2.38948489E-3) d be simplified by moving the decimal point as needed (like 0.00238948489). graphic approach* to predict the calendar year in which this model suggests there were 50 and Americans over 100 years old.
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