Answer:
The required inequity is:

The price of a gold fish should be less than or equal to $2.4 so that you can by 5 fish.
Explanation:
Consider the provided information.
You have $12 to buy five goldfish for your new fish tank.
Let the cost of a goldfish is $x.
For 5 gold fish you needs to pay $5x.
Thus, the required inequity is:

We use less than equal to sign as you can pay $12 but not more than it.
Now simplify the above inequity as shown:
Divide both the sides by 5


Thus, the price of a gold fish should be less than or equal to $2.4 so that you can by 5 fish.