Question 984122
T=6 in 2009
T=0 when new
So, when NEW, it is $17,600.
When T=6, V=-8412+17,600 ;;;6*1402=8412
V=$9,188.

V=7080=-1402T+17,600
subtract 17,600 from both sides
-1402T=-10520
T=7.50 years, or mid 2011, between 7th and 8th years.