Question

isolate the variable to solve 4x + 4 > -20. which number line shows the solution set?

Explanation:

Step1: Subtract 4 from both sides

$4x+4 - 4>-20 - 4$
$4x>-24$

Step2: Divide both sides by 4

$\frac{4x}{4}>\frac{-24}{4}$
$x > - 6$

On a number - line, for $x>-6$, we have an open circle at $x = - 6$ (because the inequality is strict, $x$ cannot equal - 6) and the line extends to the right.

Answer:

A. An open circle at - 6 and the line extending to the right.