Mathematics, 27.06.2019 00:30 staffordkimberly

An electrician sent bonnie an invoice in the amount of 'a' dollars for 6 hours of work that was done on saturday. the electrician charges a weekend fee 'f' in addition to an hourly rate 'r'. bonnie knows what the weekend fee is. write a formula bonnie can use to find 'r', the rate the electrician charges per hour.

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An electrician sent bonnie an invoice in the amount of 'a' dollars for 6 hours of work that was done...