Help me for 20 points but please give me the correct answer

bro i would help but for some reason it wont lemme view the pic.

Step-by-step explanation: Sorry man/girl! Have A Great Day!!!

d and its only 10 so there ya go

answer: kljdcdhjbdlchjad oac apoich a

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