1.	Does the inverse of exist? If it does not exist, explain why not.
		A.	No; the matrix is not square.
		B.	Yes
		C.	No; the elements of the principal diagonal are not 1.
		D.	No; the determinant equals 0.
		Hint
	2.	If , find N -1.
		A.		B.
		C.		D.
		Hint
	3.	Find the inverse of
		A.		B.
		C.		D.
		Hint
	4.	Determine whether the pair of matrices are inverses.
		A.	no, because A · B I	B.	yes, because A · B = I.
		C.	yes, because each entry in the second matrix is the reciprocal of its corresponding entry in the first matrix.	D.	no, because fractions cannot be a part of an inverse
		Hint
	5.	In order for a matrix to have an inverse, what must be true?
		A.	ad – bc = 0	B.	ad – bc = 1
		C.	ad – bc 0	D.	ad – bc 1
		Hint