15. the fourth graders are going to the
theater to watch the movie version of
the book they all have read.
number of
group
people
mr. blaine's class27
mrs. hatch's class28

miss rupert's class31
mr. lang's class29

teachers and chaperones 11

stulad
each row seats 9 people. how many rows
will be needed to seat everyone?

1. minimum

2. 6400

3. eight

hope this !

, 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

i believe it’s 165 because if u add 137 and 58 u get 195 and then subtract that from 360 and there’s ur answer