A savings account with a 2% interest rate goes from $130,231 to $190,223. How long did this take? Round to the nearest year.

i am currently in the exact same situation rn. algebra2/adv algebra is killing

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he sells x mount because thats eqivilqant to the maz and then divided into quarters

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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