SOLUTION: Give, in interval notation, the unknown numbers in the following description.
When 2 is added to twice a number, the result is greater than or equal to 14.
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Question 1151338: Give, in interval notation, the unknown numbers in the following description.
When 2 is added to twice a number, the result is greater than or equal to 14.
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
let x be the number, then
:
2x +2 > or = 14
:
subtract 2 from both sides of > or =
:
2x > or = 12
:
x > or = 6
:
therefore x belongs to the interval [6, +infinity)
:
Note the interval is closed on the left
:
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