Answer:

Explanation:
We know that:

Both 4x+2 and 10 are equal to f(x). We can use substitution and set 4x+2 and 10 equal to each other.

Now, solve for x. Perform the inverse operations to isolate x on one side of the equation.
2 is being added to 4x. The inverse of addition is subtraction. Subtract 2 from both sides of the equation.



x is being multiplied by 4. The inverse of multiplication is division. Divide both sides of the equation by 4.



For the function f(x)= 4x+2, when f(x)=20, x=2