An electric bill in may was $112 in june the bill was $163 what is the percent of increase rounded to the nearest tenth

% increase  =  (New bill -  Old bill)  / Old bill    * 100%

                     =    (163 - 112) / 112  * 100%

                     =      51 / 112    * 100%              Use your calculator

                     =      45.536%

                    =       45.5% increase to the nearest tenth

1.17+3.99a. you combine the terms with a to create 3.99 and the 1.17 stays because it has no like terms or a variable

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