From what I am looking at, it seems as if it is. :)
The answer is 1 Bcuz u have to first plug in -4 for f then solve the equation by adding like terms and dividing
Lucia can make 8 invisibility potions total!
she has 16 newt eyes overall and only two are required for one option
sooo
she can make 8 potions.
hope this helps!
905 whatever that is (I forgot)
