Answer:
option C (-∞,6]
Step-by-step explanation:
[tex]5x - 10 \leq 20[/tex]
To solve the inequality we need to get x alone
To get x alone , add 10 on both sides
[tex]5x - 10+10 \leq 20+10[/tex]
[tex]5x \leq 30[/tex]
Divide both sides by 5
[tex]x \leq 6[/tex]
for [tex]x \leq 6[/tex], the solution is (-∞,6]
