Find the Limit $L$ For the Given Function $f$ , the Point $x _ { 0 }$

question 183

Multiple Choice

Find the limit $L$ for the given function $f$ , the point $x _ { 0 }$ , and the positive number $\varepsilon$ . Then find a number $\delta > 0$ such that, for all $x _ { t } 0 < \left| x - x _ { 0 } \right| < \delta \Rightarrow | f ( x ) - L | < \varepsilon$ .
- $f ( x ) = \sqrt { 18 - x } , L = 4 , x _ { 0 } = 2 , \text { and } \varepsilon = 1$

• A) -9
• B) 9
• C) 7
• D) 12

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