According to the rational root theorem, a is a potential rational rooi of which function?
f(x) = 241 + 38 = 48 -1-22
f(x) = 28% +3% +4%-%-24
f(x) = 2077 + 3 8 + 47 - 4 - 56
f(x) = 1 + 28 + 4% -1-30