9. Your students have been asked to help stack library books on the shelves in the Media Center. This would be an opportunity to teach which of the following?
A) Seriation
B) Patterning
O C) Classification
OD) One to One correspondence.

i could probably can you me with a question of mine?

step-by-step explanation:

people grow faster than other people.

step-by-step explanation:

should you really be posting this isn't math boi.

, 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