Question

Keith plans to buy a car in the future.He currently has $3000 saved up to buy a car. How much money does he need to save per month over the next 24 months in order to have some extra money left after buying 20000 dollar car.

Answer 1

about $709 per month

Explanation:

Okay, so in order to solve this question, we should follow this formula:

3,000 + 24x
`\geq` 20,000

where 24 is the amount of time we have and x is the variable we are using as to show the unknown amount of money earned per month.

3,000 + 24x
`\geq` 20,000

-3,000 -3,000

24x
`\geq` 17,000

/24 /24

x
`\geq` approximately 709 dollars

so, we substitute x for 709

3,000 + 24(709)
`\geq` 20,000

3,000 + 17,016
`\geq` 20,000

20,016
`\geq` 20,000

which is true

Hope this helps :)