Erin buys gas at a self service station for $2.50 a gallon. The gas statio on that anyone who buys more than 10 gallons of gas, only has to pay number of gallons over 10. Write a piecewise function C(x) that represents the situation. Erin's tank can hold 15 gallons of gas. How much, if any, is Erin savir State the domain and range of the function in part (a).

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