Answer:
The truck is worth $5,135 when 9 years have passed
Step-by-step explanation:
Initial value of Alex's new truck: $42,935
Loss of value per year: $4,200
If n years passed, the truck would have lost
[tex]4,200n\ dollars[/tex]
The current value of the truck will be
[tex]V(n)=42,935-4,200n[/tex]
We want to know the value of n at which V is 5,135
[tex]5,135=42,935-4,200n[/tex]
Solving for n
[tex]n=\frac{42,935-5,135}{4,200}[/tex]
n=9 years
