1. Find the formula for the linear depreciation of the value of an automobile from $25,000 to $20,450 in 7 years.

2. A farm equipment depreciates according to a linear model. If after the 2nd year the value is $25,000
and after the 7th year its value is $12,500, what is the best formula that describes this depreciation?

3. An office machine decreases in value from $25,000 to $16,211.94 over a 7 year period.
If the decrease is exponential, write a formula for the value of the machine over time.

4. The cost of an item decreases over time exponentially. If its cost was observed to be $8,500 at year 1
and $3205.77 at year 7, what is the formula that best describe this depreciation?

5. If an experimental solar equipment depreciates for tax purposes at a rate of 10% every 10 years,
What is its depreciated value at the end of 20 years?