The number 1953 R8T9 467 is a valid card number when verified by the Luhn Algorithm. R and T are each single digits of the number such that R is less than T. Determine all possible values of R and T.

Consider the polynomials given below. p(x) = x4 + 3x3 + 2x2 – x + 2 q(x) = (x3 + 2x2 + 3)(x2 – 2) determine the operation that results in the simplified expression below. 35 + x4 – 573 - 3x2 + x - 8 a. p+q b. pq c.q-p d. p-q