Question

In 2020, there were about 260 million gas powered cars on the road. This number isexpected to decrease at a rate of 1.3% per year. In 4 years, if this information iscorrect then what is the best prediction of the number of people driving gaspowered cars? Round answer to a whole number.

Answer 1

Solution

Given that

In 2020, there were about 260 millions gas powered cars

decreasing at a rate of 1.3%

After 4 years, the best prediction would be

$\begin{gathered} P(2020)=260\text{ millions} \\ \\ P(2021)=260-260\times1.3\%=256.62 \\ \\ P(2022)=256.62-256.62\times1.3\%=253.28394 \\ \\ P(2023)=253.28394-253.28394\times1.3\%=249.99124878 \\ \\ P(2024)=249.99124878-249.99124878\times1.3\%=246.74136254586\approx247\text{ millions} \\ \end{gathered}$

Hence, it's 247 millions