If , which interval represents all possible values of ?
Answer and explanation
Correct answer: C.
- Step 1: Set up double inequality: .
- Step 2: Add 3 to all parts: .
- Step 3: Divide by 2: , or interval .
Answer
(-2, 5).
Why not the others: '' forgets to add 3 before dividing; '' ignores negative values; '' is an arithmetic error.
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