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Mathematics, 07.09.2020 01:01 franklinkaylieg1145

For a cellular phone billing plan, $50 per month buys 400 minutes or less. Additional time costs $0.30 per minute. Let the monthly cost C(x) be a function of the time x.

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For a cellular phone billing plan, $50 per month buys 400 minutes or less. Additional time costs $0....

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