A single-variable polynomial of degree n is written as a_0 + a_1x + a_2x^2+ ellipsis + a_nx^n where an, ellipsis, a_0 are coefficients. Suppose we represent such a polynomial as a list (a_0, a_1, a_2, ellipsis, a_n). Write a Scheme function compute, which takes a list that represents a polynomial and a value for x and computes the value for the polynomial. For instance, when given input polynomial (1, 2, 3) and 2, then the function should return 17, because l + 2*2 + 3*2^2 = 17