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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.

Respuesta :

VanillaAngelic
Rate of change is also another name for the slope so in this case, the question is asking you for the slope.

How can we find the slope?
The formula for slope is y2-y1/x2-x1

Now let's plug in for the year 1980 and 1990.

239-120/1990-1980
= 119/10

Slope is 119/10.

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