Mathematics

Kendall Howell

26 April, 04:39

An electrician sent Bonnie an invoice in the amount of a dollars for the six hours of work done on saturday. The electrician charges a weekend fee f in addition to an hourly rate r. Write a formula Bonnie can use to find r, the rate the electrician charges per hour, in terms of a and f. If the invoice amount is $450 and the weekend fee is $75, what is the hourly rate?

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