Chapter 9 - Quadratic Functions and Equations - 9-8 Systems of Linear and Quadratic Equations - Practice and Problem-Solving Exercises - Page 601: 38

(F) $4(x+2)=4x+8$.

Formula for the distributive property: $\Rightarrow a(b+c)=ab+ac$ Substitute $a=4,b=x$ and $c=2$. $\Rightarrow 4(x+2)=4x+4\cdot 2$ Simplify. $\Rightarrow 4(x+2)=4x+8$ Hence, the correct option is (F) $4(x+2)=4x+8$.