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We need to find the piecewise function for the situation
The piecewise function is C(x) = 50 + 0.10(x + 500)
Charge for 500 minutes = $50
Charge per additional minutes = $.10
Let
x = total minutes
C(x) = total cost
The piecewise function:
Total cost = cost for 500 minutes + additional cost per minutes (total minutes - 500 minutes)
C(x) = 50 + 0.10(x - 500)
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