Basic Mathematics for College Students

history of racing. Express the position of Twice a

Princecompared to Secretariatas a signed number.

(Source: ezinearticles.com)

84. NASCAR In the NASCAR driver standings,
    negative numbers are used to tell how many points
    behind the leader a given driver is. Jimmie Johnson
    was the leading driver in 2008. The other drivers in
    the top ten were Greg Biffle , Clint Bowyer
    , Jeff Burton , Kyle Busch , Carl
    Edwards , Jeff Gordon , Denny Hamlin
    , Kevin Harvick , and Tony Stewart
    . Use this information to rank the drivers in
    the table below.

(482)

(470) (276)

(69) (368)

(303) (349) (498)

(217)

the building and then falls to the ground. Use the

number line to estimate the position of the balloon at

each time listed in the table below.

30

20

10

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

–120

2 sec

3 sec

4 sec

1 sec

0 sec

2.1 An Introduction to the Integers 141

Rank Driver Points behind leader

1 Jimmie Johnson Leader

2 3 4 5 6 7 8 9

10

2008 NASCAR Final Driver Standings

85. FREE FALL A boy launches a water balloon from
    the top of a building, as shown in the next column.
    At that instant, his friend starts a stopwatch and
    keeps track of the time as the balloon sails above

(Source: NASCAR.com)

© Bettmann/Corbis

AP Images

Time Position of balloon

0 sec

1 sec

2 sec

3 sec

4 sec

Time Position of duck

0 sec

1 sec

2 sec

3 sec

4 sec

86. CARNIVAL GAMES At a carnival shooting gallery,
    players aim at moving ducks. The path of one duck is
    shown, along with the time it takes the duck to reach
    certain positions on the gallery wall. Use the number
    line to estimate the position of the duck at each time
    listed in the table below.

− 5 − 4 − 3 − 2 − 1012345

0 sec 1 sec

2 sec

3 sec 4 sec