X(year)| y ($ in billions)
1980 | 120
1985 | 165
1990 | 239
1995 | 290
...
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Mathematics, 19.10.2019 07:30 Meirna
X(year)| y ($ in billions)
1980 | 120
1985 | 165
1990 | 239
1995 | 290
2000 | 376
the table shows the billions of dollars spent on food and drink in u. s. restaurants for the years shown. find the rate of change for 1980 to 1990.
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