Aaliyah has a secret hobby – she is a rabid stamp collector. In fact, she has a terrific collection, but it would take a lot to have a complete collection. In looking through one of her philately magazines, she finds a table that gives the cumulative number of stamps S released by the United States Post Office in the years from 1889 to 1989, where t represents the number of years since 1889. t

0

10

20

30

40

50

60

70

80

90

100

S

218

293

374

541

681

858

986

1138

1138

1794

2438

3. Does the data show an increase that changes by a constant amount or by a constant rate?

4. Find a good model for the data. What is the function you wrote?

5. Aaliyah is missing the data for the year 1999. What is a good estimate for the number of stamps released through that year?