Regents High School Examination - Mathematics B Worksheet - The University Of The State Of New York, 2004 Page 14

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29 A box containing 1,000 coins is shaken, and the coins are emptied onto
a table. Only the coins that land heads up are returned to the box, and
then the process is repeated. The accompanying table shows the
number of trials and the number of coins returned to the box after each
trial.
Trial
0
1
3
4
6
Coins Returned
1,000
610
220
132
45
Write an exponential regression equation, rounding the calculated
values to the nearest ten-thousandth.
Use the equation to predict how many coins would be returned to the
box after the eighth trial.
[14]
Math. B – Aug. ’04

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