Question

solve the inequality. then graph the solution set.
0 < 3(x + 7) ≤ 20
-∞ < x < ∞
x < - 1/3 or x ≥ 7
137/21 < x ≤ 7
-7 < x ≤ - 1/3
use the tools to enter your answer.
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Explanation:

Step1: Divide by 3

Divide each part of $0 < 3(x + 7)\leq20$ by 3. We get $0

Step2: Subtract 7

Subtract 7 from each part. $0-7$ - 7

Answer:

The solution set is $-7-7$) and a closed circle at $x=-\frac{1}{3}$ (because $x\leq-\frac{1}{3}$) and shade the region in between.