A student overheard the principal saying that there would be a celebrity attending the Senior Prom this year. The following chart shows how quickly the rumor travelled. t t(minutes)

0

1

2

3

4

6

7

8

9

10

s(students who have heard the rumor)

1

8

32

86

156

217

223

224

225

225

1. This data can be modeled with a
regression equation

2. Choose the appropriate regression equation.

3. According to the regression equation about how long did it take for 165 students to hear about the rumor?