when the batber shep uset 10,000 galons, 13,000 galions, and 18,000 galions. (Do not iound interim calcalafors. Found your frea answers bo the nearest cert) \begin{tabular}{l} Usage Total Water Cost \\ \hline 10,000 galions \\ 13,000 gallons \\ 11,000 gallons \end{tabular}