Barbie Bungee Data

Today in class we experimented with barbie dolls bungee jumping. We put barbie doll in a rubber band & tied them together .. Let her fall & marked her distance fall when whe had 1 rubberband it was 43 cm 

2) 61 cm

3)73 cm

4)81 cm

5)95 cm

6)110 cm

7)130 cm

8) 143 cm .. I see a random pattern , i see it go from i 12 distance from most of then so if it was there were 10 rubber bands i would get 167 cm ,

If there were to be 20 rubber bands i would've gotten 323 cm , if it were to be 30 i would've gotten 458 cm .. The way i got this answer was sence the distance from my 1-8 rubber bands was mostly 12 i added 12 x12 each time .. So sence it was 10 runner bands i would've multipled or added it (12) .. 12 twelve times