To find the rate of change in attendance from 2012 to 2016, we follow these steps:
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Determine the attendance values for the years in question:
- Attendance in 2012: 820
- Attendance in 2016: 818
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Calculate the change in attendance: \[ \text{Change in attendance} = \text{Attendance in 2016} - \text{Attendance in 2012} = 818 - 820 = -2 \]
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Determine the number of years between 2012 and 2016: \[ \text{Number of years} = 2016 - 2012 = 4 \]
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Calculate the rate of change: \[ \text{Rate of change} = \frac{\text{Change in attendance}}{\text{Number of years}} = \frac{-2}{4} = -0.5 \]
Thus, the rate of change in attendance between 2012 and 2016 is: \[ -0.5 \text{ people per year} \]