Matthew Tyler's VISA balance is $$1,791\mathrm{.}72.$ He may pay it off in $12$ equal end$-$of$-$month payments of $$180$ each.

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What interest rate is Matthew paying? $($Round answer to $1$ decimal place, e$.$g$.8\mathrm{.}5\%.)$

Interest rate

$\%$ per month

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