A baseball pitcher's earned run average (ERA) is \( A(e, i)=9 e / i \), where \( e \) is the number of earned runs given up by the pitcher and \( i \) is the number of innings pitched. Good pitchers have low ERAs. Assume that \(\mathrm{e}\geq 0\) and \(\mathrm{i}>0\) are real numbers. a. During his best season, a certain pitcher pitched a total of 204 innings and gave up just 32 earned runs. What was his ERA? b. Determine the ERA of a relief pitcher who gives up 3 earned runs in one-third of an inning. c. Graph the level curve \( A(e, i)=6\), and describe the relationship between \( e \) and \( i \) in this case. a. The pitcher's ERA for the season was (Round to two decimal places as needed.)