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A cell phone plan has a basic charge of $40 a month. The plan includes 500 free minutes and charges 10 cents for each additional minute of usage. Write the monthly cost C (in dollars) as a function of the number x of minutes used. C(x) = { if ≤ x ≤ if x > Graph C as a function of x for 0 ≤ x ≤ 750.

A cell phone plan has a basic charge of $40 a month. The plan includes 500 free minutes and charges 10 cents for each additional minute of usage. Write the monthly cost C (in dollars) as a function of the number x of minutes used. C(x) = { if ≤ x ≤ if x > Graph C as a function of x for 0 ≤ x ≤ 750.

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A cell phone plan has a basic charge of $ 40 a month. The plan includes 500 free minutes and charges 10 cents for each additional minute of usage. Write the monthly cost C (in dollars) as a function of the number x of minutes used.
C ( x ) = { ◻ if ◻ ≤ x ≤ ◻ ◻ if x > ◻ ◻
Graph C as a function of x for 0 ≤ x ≤ 750 .

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