Chapter P - Summary, Review, and Test - Review Exercises: 23

U.S diversity index(D) in 2010 (30 years after 1980)= 55 Both the bar graph and formula give the same results

Work Step by Step

U.S diversity index(D) $x$ years after 1980 = 0.005$x^{2}$ + 0.55$x$ + 34 U.S diversity index(D) in 2010 (30 years after 1980) = 0.005$\times30^{2}$ + 0.55$\times30$ + 34 = 0.05$\times$900 + 0.55$\times30$ + 34 = 4.5 + 16.5 +34 = 55 Both the bar graph and formula give the same results

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