INSTRUCTIONS: ANSWER THE FOLLOWING QUESTION. NO NEED FOR THE SOLUTION AS LONG AS THE FINAL ANSWER IS CORRECT. FOLLOW THE FORMAT GIVEN.

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Chapter 2, Supplementary Exercises, Question 21 1 0 -5 Let A= 1 1 1 0 -1 0 Use the adjoint method (Theorem 2.3.6) to find the inverse of the matrix A , if it exists. Enter as a matrix, exactly in fractional form if required, if not invertible enter "NA". A-1 ? EditChapter 2, Supplementary Exercises, Question 20 1 2 3 Let A = 4 5 6 7 Use the adjoint method (Theorem 2.3.6) to find the inverse of the given matrix, if it exists. Enter as a marix, exactly in fractional from if required, if not invertible enter "NA". ? EditChapter 2, Supplementary Exercises, Question 16 Solve for x 2 0 X H = -7 X 5 -5 1-X -8 3 x +3 X1 : ? Edit X2 = ? Edit Fill the upper blank with the greater value of x if it exists. Fill the blank with the symbol "-" if there is no corresponding x. Round your answer to two decimal places.Chapter 2, Section 2.3, Question 33 b C Let A = e . Assume that det(A) = -7. find agd (a) det(3A) (b) det(A ) (c) det(4A-1) (d) det((4A) -1) (e) det b e ci F (a) det (3A) = Edit (b) det (A ] ) = ? Edit(b) det (A ) = ? Edit (c) det (4A-] ) = ? Edit (d) det (4A) -1) = Edit a d (e) det b h e = ? EditChapter 2, Section 2.3, Question 18 1 -7 0 Let A = K 1 0 -7 1 Find the values of k for which A is not invertible. Enter all values exactly in fractional form, seperated by commas. Values of k for which A is not Invertible are ? Edit\fChapter 2, Section 2.2, Question 17 a C 5a 5b 5c Given that e f = -3 ,find -3d -3e -3f oh 49 4h 4i 5a 50 5c -3d -3e -3f 4g 4h 4i exact number, no toleranceChapter 2, Section 2.2, Question 09 Evaluate the determinant of the given matrix by reducing the matrix to row-echelon form. 4 -8 8 A = 11 -2 0 1 4 det(A): exact number, no tolerance