<s>[INST] Spencer, Chloe, and Al are running in a race, and their times are modeled by their respective functions, which are defined as follows:

-Spencer: S(x) = x^2 - 4x
-Chloe: C(x) = 1.3x^2 - 2.2x + 1
-Al: A(x) = x^2 - 0.6x - 1

where x is the distance (in km). The race is taking place on an oval track, and each lap is exactly 2 km. If the goal is for the runners to finish exactly 6 full laps (12 km), how can we determine Spencer, Chloe, and Al's finishing times (in minutes)?[/INST]