Chapter 5 | Integration
525
39. The following table gives the approximate increase in sea level in inches over 20 years starting in the given year. Estimate the net change in mean sea level from 1870 to 2010. Starting Year 20-Year Change
40. The following table gives the approximate increase in dollars in the average price of a gallon of gas per decade since 1950. If the average price of a gallon of gas in 2010 was $2.60, what was the average price of a gallon of gas in 1950? Starting Year 10-Year Change
1870
0.3
1950
0.03
1890
1.5
1960
0.05
1910
0.2
1970
0.86
1930
2.8
1980
−0.03
1950
0.7
1990
0.29
1970
1.1
2000
1.12
1990
1.5
Table 5.4 Approximate 10-Year Gas Price Increases, 1950–2000 Source : http://epb.lbl.gov/homepages/
Table 5.3 Approximate 20-Year Sea Level Increases, 1870–1990 Source : http://link.springer.com/article/ 10.1007%2Fs10712-011-9119-1
Rick_Diamond/docs/ lbnl55011-trends.pdf.
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