Math  /  Algebra

QuestionSolve for xx. 2x+37 OR 2x+9>112 x+3 \geq 7 \quad \text { OR } \quad 2 x+9>11
Choose 1 answer: (A) x>1x>1 (B) x2x \geq 2 (C) x2x \leq 2 (D) There are no solutions (E) All values of xx are solutions

Studdy Solution

STEP 1

1. The problem involves solving a compound inequality with two separate inequalities connected by the word "OR."
2. We need to find the values of x x that satisfy at least one of the inequalities.
3. The solution set is the union of the solution sets of the individual inequalities.

STEP 2

1. Solve the first inequality 2x+37 2x + 3 \geq 7 .
2. Solve the second inequality 2x+9>11 2x + 9 > 11 .
3. Combine the solutions using the "OR" condition.
4. Compare the combined solution with the given choices.

STEP 3

Solve the first inequality 2x+37 2x + 3 \geq 7 .
Subtract 3 from both sides:
2x+3373 2x + 3 - 3 \geq 7 - 3
Simplify:
2x4 2x \geq 4
Divide both sides by 2:
x2 x \geq 2

STEP 4

Solve the second inequality 2x+9>11 2x + 9 > 11 .
Subtract 9 from both sides:
2x+99>119 2x + 9 - 9 > 11 - 9
Simplify:
2x>2 2x > 2
Divide both sides by 2:
x>1 x > 1

STEP 5

Combine the solutions using the "OR" condition:
The solution to the first inequality is x2 x \geq 2 .
The solution to the second inequality is x>1 x > 1 .
Since the inequalities are connected by "OR," we take the union of the solutions.
The combined solution is x>1 x > 1 .

STEP 6

Compare the combined solution with the given choices:
(A) x>1 x > 1 - This matches our combined solution. (B) x2 x \geq 2 - This is more restrictive than our solution. (C) x2 x \leq 2 - This does not match our solution. (D) There are no solutions - This is incorrect. (E) All values of x x are solutions - This is incorrect.
The correct answer is (A) x>1 x > 1 .

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