Answer:
$13,946.17.
Explanation:
We have been given that Ford Mustang that originally cost 25,000.00. It depreciates 8% a year. We are asked to find the value of Mustang after 7 years.
We will use exponential decay function to solve our given problem.
An exponential decay function is in form
, where,
a = Initial value,
r = Decay rate in decimal form.
Let us convert our given decay rate in decimal form.
![8\%=(8)/(100)=0.08](https://img.qammunity.org/2020/formulas/mathematics/high-school/5z4iqt5nnl15msk4dmacl7irtm66lx1kos.png)
Upon substituting our given values in above formula we will get,
![y=\$25,000\cdot (1-0.08)^7](https://img.qammunity.org/2020/formulas/mathematics/high-school/8j8n4795mx23i2lw1q1in46hu7t5lfqbkp.png)
![y=\$25,000\cdot (0.92)^7](https://img.qammunity.org/2020/formulas/mathematics/high-school/9q3lhlzhutiy1lj6a1dgd6x7cq6rclc857.png)
![y=\$25,000\cdot 0.55784660123648](https://img.qammunity.org/2020/formulas/mathematics/high-school/qoiraydluqup10s50dn7ajafg3f25jq0z0.png)
![y=\$13,946.165030912\approx \$13,946.17](https://img.qammunity.org/2020/formulas/mathematics/high-school/xemd5p8z6ltxeguhhzkezlqgrioikgl9p6.png)
Therefore, the value of machine after 7 years would be $13,946.17.