Solve the inequality \( \frac{f}{3} \leq \frac{1}{9} \), and write the solution in interval notation

Solve the equation \( \frac{f}{3} \leq \frac{1}{9} \). Solve the inequality by following steps: - step0: Solve for \(f\): \(\frac{f}{3}\leq \frac{1}{9}\) - step1: Multiply both sides: \(\frac{f}{3}\times 9\leq \frac{1}{9}\times 9\) - step2: Multiply the terms: \(3f\leq 1\) - step3: Divide both sides: \(\frac{3f}{3}\leq \frac{1}{3}\) - step4: Divide the numbers: \(f\leq \frac{1}{3}\) The solution to the inequality \( \frac{f}{3} \leq \frac{1}{9} \) is \( f \leq \frac{1}{3} \). In interval notation, the solution is \( (-\infty, \frac{1}{3}] \).