Question: Encrypt the message MATH by translating the letters into numbers and then applying the encryption function given, and then translating the numbers back

Encrypt the message " MATH " by translating the letters into numbers and then applying the encryption function given, and then translating the numbers back into letters. (a) f(p) = (19p + 5) mod 26 (b) f(p) = (21p + 12) mod 26 Use A = 0,B = 1,C = 2,D = 3,E = 4,F = 5,G = 6,H = 7,1 = 8, J =9,K = 10, L = 11,M = 12,N = 13,0 = 14,P = 15,Q = 16,R = 17, S =18,T = 19,U = 20, V = 21,W = 22,X = 23,Y = 24,Z = 25

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