SOLUTION
In 2010, the cost for the car was $21,000 and in 2019 it was $24,000
The increase in price is
![24,000-21,000=3,000\text{ dollars }](https://img.qammunity.org/2023/formulas/mathematics/college/zmbxyz9pdk517634xlr1f2a40v53yecac4.png)
Percentage increase in price is calculated as
![\frac{i\text{ncrease in price }}{\text{original price }}*100](https://img.qammunity.org/2023/formulas/mathematics/college/lkbk8la1zwvfw2e806rrw2bs7y1fg0scni.png)
This becomes
![\begin{gathered} \frac{3000\text{ }}{21000\text{ }}*100 \\ =14.29\text{ percent } \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/5zj4gmtdzorn0namtdy9uppwtspohfkls0.png)
Therefore Percent increase is the increase in price is 14.29%
(b) The average increase is calculated as
![\frac{i\text{ncrease in price }}{n\text{umber of years }}](https://img.qammunity.org/2023/formulas/mathematics/college/mo0sjzdbiikktlai4cvc6i93y1w2nrozwo.png)
2010 to 2019 is 9 years. So the average increase is
![\frac{3000\text{ }}{9}=333.33\text{ dollars }](https://img.qammunity.org/2023/formulas/mathematics/college/w4nvcmgkp819v2yrcinvoqg4tggyazn4i7.png)
Therefore, the average increase is $333.33 per year