ANSWER
![\begin{gathered} 42,000\operatorname{kg}m\/s \\ 3.5m\/s\text{ due East} \end{gathered}]()
Step-by-step explanation
Parameters given:
Mass of car, m = 9,000 kg
Mass of SUV, M = 12,000 kg
Initial speed of car, u = 8 m/s (taking East to be the positive direction)
Initial speed of SUV, U = - 7 m/s (taking West to be the negative direction)
Final speed of car, v = -6 m/s
To find the final momentum of the SUV, we have to apply the principle of conservation of momentum, which states that:
This implies that:

where pic = initial momentum of the car, pis = initial momentum of the SUV, pfc = final momentum of the car, pfs = final momentum of the SUV
We can rewrite the formula above as follows:

where MV represents the final momentum of the SUV.
Therefore, we have that the final momentum of the SUV is:
![\begin{gathered} mu+MU=mv+p_(fs) \\ (9000\cdot8)+(12000\cdot(-7))=(9000\cdot-6)+p_(fs) \\ \Rightarrow72,000-84,000=-54,000+p_(fs) \\ \Rightarrow p_(fs)=72,000-84,000+54,000 \\ p_(fs)=42,000\operatorname{kg}m\/s \end{gathered}]()
To find the speed of the SUV after the collision, we have to find the final speed of the SUV.
We have that from the formula for momentum:

Therefore, the final speed of the SUV is:

Since it is positive, the speed is due East.