Mathematics, 08.02.2021 21:30 dylannsquats

Nannette installed a security system in her office for $150. The monthly monitoring fee is $30. So far, Nannette has spent $420 for her security system. Which equation can you use to find the number months she has had the service?

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Nannette installed a security system in her office for $150. The monthly monitoring fee is $30. So f...

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