Concept explainers
Earned run average A baseball pitcher’s earned run average (ERA) is A(e, i) = 9e/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 e ≥ 0 and i > 0 are real numbers.
a. The single-season major league record for the lowest ERA was set by Dutch Leonard of the Detroit Tigers in 1914. During that season, Dutch pitched a total of 224 innings and gave up just 24 earned runs. What was his ERA?
b. Determine the ERA of a relief pitcher who gives up 4 earned runs in one-third of an inning.
c. Graph the level curve A(e, i) = 3 and describe the relationship between e and i in this case.
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Calculus: Early Transcendentals (2nd Edition)
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- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage