2) jake has three pieces of ribbon. the
lengths of the ribbons are 136.7
centimeters, 136.85 centimeters, and
104.9 centimeters. what is the
difference in length between the
longest and shortest pieces of ribbon?
show your work

so then what are you asking?

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for