Solve the Compound Inequality $\phi$ , Use Interval Notation to Express the Solution Set and Interval

question 103

Multiple Choice

Solve the compound inequality. Other than $\phi$ , use interval notation to express the solution set and graph the solution set
on a number line.
- $12 < 3 x \leq 21$

• A) \(( 4,7 ]\)
• B) \(( - \infty , 4 ] \cup ( 7 , \infty )\)
• C) \([ 4,7 )\)
• D) \(( - \infty , 4 ) \cup [ 7 , \infty )\)

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