For each inequality, determine which of the given numbers are in … - Vidyadip

Question

For each inequality, determine which of the given numbers are in the solution set:
2x + 3 >11; -3, 4, 5, 7

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Answer

If x = -3
Then 2x + 3 = 2 x (-3) + 3 = -3
Since, -3 > 11 is false.
So -3 is not in the solution of 2x + 3 > 11
If, x = 4, en 2x + 3 = 2 x 4 + 3 = 11
since 11 > 11 is false.
So 4 is not in the solution of 2x + 3 > 11
If x = 5, en 2x + 3 = 2 x 5 + 3 = 13
Since,13 > 11 is true ;
So, 5 is in the solution of 2x + 3 >11
Similarly, x = 7 is in the solution of 2x 3 > 11.

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