SubArea: Rational functionsLevel: BProject ID: 2010009903Source Problem: 9000014210Accepted: 0Clonable: 1Easy: 0Consider the function f(x)=6x−1−1. Find all x such that f(x)<0.x∈(−∞;1)∪(7;∞)x∈(−∞;−7)∪(−1;∞)x∈(7;∞)x∈(−∞;7)