To solve this inequality, we need to convert the mixed number 3/5 into a fraction.

First, we multiply the whole number 9 by the denominator 5:
9 * 5 = 45

Then, we add the numerator 3 to get the final numerator:
45 + 3 = 48

So, the mixed number 3/5 can be written as the fraction 48/5.

Now, the inequality becomes:
9 <= 48/5

To simplify the inequality, we can multiply both sides by 5 to get rid of the fraction:
9 * 5 <= 48
45 <= 48

Since 45 is less than or equal to 48, the inequality is true.