Option 3, is correct.
Just find the one that have the x's only, not the one that is squared or without one. It doesn't matter if the term is a negative or positive.
If you have any further questions, please reach out to me :)
X = 20
Isolate the variable by dividing each side by factors that don't contain the variable.
x
=
20
1. -6 ≤ x < -1 . . . . conjunction
2. x ≤ 6 . . or . . 10 ≤ x . . . . disjunction
3. 7 ≤ x < 12 . . . . conjunction
4. x < -9 . . or . . -3 ≤ x . . . . disjunction
5. 2 ≤ x ≤ 5 . . . . conjunction
6. x ≤ 54 . . or . . 66 ≤ x . . . . disjunction
7. 39 < x ≤ 43 . . . . conjunction
_____
Your problem statement provided no letters.
Answer:
7
Step-by-step explanation:
he can iron 7 in 21 minutes
hope this helps
Idk what the dollar signs or what the letters represent, would help but doesnt make sense