Answer
See below.
Work Step by Step
The value of the car can be computed by the 10th term of the geometric sequence with $a_0=30000$ and common ratio $r=0.85$.
The nth term of a geometric series can be obtained by the following formula: $a_n=a_0\cdot r^{n}$, where $a_0$ is the zeroth term and $r$ is the common ratio.
Hence here: $a_{10}=31000\cdot(0.85)^{10}=6103.11$
