ANSWER
Find out the how many years can she keep the car.
To proof
As given
Daniela bought a car for $24,000
Each year the value of the car decreases by $1750.
let us assume that the number of years be x.
when daniela sells her car she wants to get at least 10,000 for it.
Than the inequality becomes in the form
24000 - 1750 x ≤ 10000
solve
1750x ≤ 14000
[tex]x \leq \frac{14000}{1750}[/tex]
x ≤ 8 years
she keeps the cars 8 years .
Hence proved