Write in interval notation,please
-4x <= -12
Divide both sides by -4 and switch the sign around:
-4x/-4 <= -12/-4
x >= 3
2x-21 >= -11
Add 21 to both sides:
2x-21+21 >= -11+21
2x >= 10
Divide both sides by 2:
2x/2 >= 10/2
x >= 5
x>=3 or x>= 5, meaning x>=3 (since it includes both)
Answer: [3, Infinity+)
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Verified answer
-4x <= -12
Divide both sides by -4 and switch the sign around:
-4x/-4 <= -12/-4
x >= 3
2x-21 >= -11
Add 21 to both sides:
2x-21+21 >= -11+21
2x >= 10
Divide both sides by 2:
2x/2 >= 10/2
x >= 5
x>=3 or x>= 5, meaning x>=3 (since it includes both)
Answer: [3, Infinity+)