<h2>
Hello!</h2>
The answer is: The correct dose of medication to give is 5.6 mL
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Why?</h2>
To solve this problem we need to establish a relationship between the prescripted medication and the available solution.
Let's write the needed equations to establish the relantionship:

The available solution means 125 mg each 5 mL of solution, so:

Hence, the correct dose of medication to give is 5.6 mL of the 125 mg/5mL solution.
Have a nice day!
Y = mx + c therefore
m = 1
c = -2
You put 4-3 over 7
4-3/7 = 1/7
So the answer would be 1/7