Vector Problem | Need Help with Problems 3 and 4? Get Expert Assistance Here!

[thedudescousin]

Attached is the problem I need help on. I have done 1 and 2 but I am not sure how to do 3 and 4. Any help will be appreciated.

This is what I have so far, are the answers correct?

 

[EnumaElish]

While we are all awaiting for the attachment to be approved, you should show some attempt toward solving 3 and 4.

 

[thedudescousin]

i just attaced them