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$630

Step-by-step explanation:

$2,560 - $1,930 = $630

630

Explanation:

To solve this problem, you need to subtract 1,930 from 2,560. Then, you will have the final balance of the bank account.

2,560 - 1,930

630

Therefore, $630 is the final balance.

answer: the answer is ann

, 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