Pleas hellpp me instructions: you can save the picture to ur device and answer it, I will give brainliest to the person who can answer it first and fast (well not that fast but I need it now) and will get high points

ignore this i messed up sry

Step-by-step explanation:

yep

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