Given the functions k(x) = 5x − 8 and p(x) = x − 4, solve k[p(x)] and select the correct answer below.
1) k[p(x)] = 5x − 12
2) k[p(x)] = 5x − 28
3) [p(x)] = 5x2 − 12
4) k[p(x)] = 5x2 − 28