Voters It wasn’t until Harry Truman garnered 77% of the black vote in 1948 that a majority of blacks reported that they considered themselves Democrats. The table gives the percent p of black voters who supported Democratic candidates for president for the years 1960–2008.
a. Is the percent p a function of the year y?
b. Let p = f(y) denote that p is a function of y. Find ƒ(1992) and explain what it means.
c. What is y if f(y) = 94? What does this mean?
Year | Democrat (%) | GOP (%) |
1960 | 68 | 32 |
1964 | 94 | 6 |
1968 | 85 | 15 |
1972 | 87 | 13 |
1976 | 85 | 15 |
1980 | 86 | 12 |
1984 | 89 | 9 |
1992 | 82 | 11 |
1996 | 84 | 12 |
2000 | 93 | 7 |
2004 | 74 | 26 |
2008 | 95 | 5 |
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