Question

In 2020, there were about 282 million gas powered cars on the road. This number isexpected to decrease at a rate of 3.1% per year. In 10 years, if this information iscorrect then what is the best prediction of the number of people driving gas powered cars? Round answer to a whole number.

Answer 1

$\begin{gathered} 282,000,000\text{ \lparen0.969\rparen}^t=x\text{ }This\text{ equation describes the amount of cars after t years} \\ 282,000,000(0.969)^{10\text{ }}=x\text{ 0,969 is 96.9\% \lparen100 - 3.1\%\rparen in decimal } \\ \text{and 10 is the amount of years} \\ 282,000,000(0.7299)=x \\ x=205,819,671 \\ \end{gathered}$

The amount of cars in 10 years will be 205,819,671