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Advanced Placement (AP), 17.12.2020 22:30 iyana479
A teacher purchased 20 calculators and 10 measuring tapes for her class and paid $495. Later, she realized that she didn’t order enough supplies. She placed another order of 8 of the same calculators and 1 more of the same measuring tape and paid $178.50.
This system represents the constraints in this situation:
`20c+10m=495`
`8c+m=178.50`
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A teacher purchased 20 calculators and 10 measuring tapes for her class and paid $495. Later, she re...
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