Answer: About 3.14 inches
That is not true there is a person and that person is called god and he created us sense day one and he sent down Jesus to die on the cross for our sins and he went through the worst thing imaginable just to save us from our sins. If you don’t believe me look it up and it will tell you who created us so you should be thankful you are here today if it wasn’t for Jesus you would not be here who ever said that is wrong trust me.
The equation is 138=300-3x
now solve by first subtracting 300 from each side: -162=-3x
divide each side by -3: x=54
The wise man is 54 years old
You have the following function:

Derivate implictly the previous expression, as follow:

Where you have used that:

Then, the implicit derivative of the given expression is:

Next, solve for y' as follow:
