What Are the Determinants of These Matrix Transformations?

[NeonVomitt]

Homework Statement

Let A be a 3 x 3 matrix with determinant 14. Then detadj(A^T) =___, det (adj)(A^-1) =___ and det((adj)(7A)) = ___

Homework Equations

Thank you! If someone could show me the steps that would be swell!

The Attempt at a Solution

 

[Mark44]

Show us what you have done. We're not going to fill in the blanks for you.