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Mathematics, 27.10.2020 19:00 contactjoankenny

At Yvonne's auto dealing, car washes cost $5 for any time up to 10 minutes, plus $ .40 per minute after that. The managers at Yvonne's are trying to agree on a formula for calculating the cost c for a t-minute car wash. Sid thinks c = 0.4t + 5 is correct. Is he correct?

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At Yvonne's auto dealing, car washes cost $5 for any time up to 10 minutes, plus $ .40 per minute af...
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