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Mathematics, 18.10.2020 07:01 derbraz4588

Dash: offers an unlimited talk and texting plan for $80 per month. Please
AB&C: charges $0.20 per text message and $55 for 1,000 minutes of talk time per month.

Horizon: charges $0.10 per text message and $75 for 1,000 minutes of talk time per month.

What are the equations for these?

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Dash: offers an unlimited talk and texting plan for $80 per month. Please
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