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Mathematics 21 Online
OpenStudy (anonymous):

A salesperson earns 900 dollars per month plus a 10% commission on all sales over 1,000 dollars. One month she sells r dollars' worth of merchandise where r>$1000. How many dollars does she earn that month? A) 800+ .1r B) 800- .1r C) 900+ 1r D) 900- .1r E) 810 + .1r

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