Example
0.333
3)1.000
-9
erika uses division to write and as decimals.
first she estimates that because is between
and), it will be between 0.25 and 0.5. likewise,
because z is between 2 and it will be between
0.5 and 0.75. then she divides as shown at the right.
} = 0. or 0.3 = 0. or 0.6
0.666
3)2.000
-18
20
-18
20
2011
-18
1 erika says that no matter how many decimal places she
divides to when she divides 1 by 3, the digit 3 in the
quotient will just keep repeating. is she correct? explain.

Aconcession manager at yankee stadium wants to know how temperature affects beer sales. she took a sample of 10 games and recorded the number of beers sold and the temperature in the middle of the game. temperature 80 68 78 79 87 74 86 92 77 84 number of beers 20533 1439 13829 21286 30985 17187 30240 87596 9610 28742 a. draw a scatter plot of the data. b. the manager estimates the regression equation to be: numberofbeers = −100, 678 + 1, 513 ∗ temperature draw this on your scatter plot. c. for one of the estimated points, indicate the residual with ei . d. for that same point, indicate what part of the variation is explained by the model with ˆyi − y¯.