Question:
Mark $(\sqrt{)}$ against the correct answer in the following:
If $f(x)=\left\{\begin{array}{c}\mathrm{kx}+5, \text { when } \mathrm{x} \leq 2 \\ \mathrm{x}+1, \text { when } \mathrm{x}>2\end{array}\right.$ is continuous at $\mathrm{x}=2$ then $\mathrm{k}=?$
A. 2
B. $-2$
C. 3
D. $-3$
Solution:
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