Hill Cipher question

Please show all your work so I can fully understand the process! :)

3. Hill cipher: 6 24 1 16 20 17 15 If a Hill cipher has an encryption key K = | 13 101 , the plain text is "JELLYFISH", what a. is the ciphertext in English characters? Note: Suppose each letter is represented by the value of its position, i.e., letter A is 0, letter B is 1, letter T is 19, letter Z is 25. Please show your steps. You may use online matrix calculator (e.g. https://matrixcalc.org/en/) to calculate matrix. (15 points) What is the Hill cipher key matrix K that can realize the following permutation? (10 points) b. 3 1 r: 13 4 , Hint: consider a key matrix with only 0's and 1's 4