Given \( f(x)=\sqrt{x+2} \) and \( g(x)=3 x^{2} \), evaluate the following a. \( f(-1) \) b.

Step 1 ：\( f(-1) = \sqrt{-1 + 2} \)

Step 2 ：\( f(-1) = \sqrt{1} \)

Step 3 ：\( f(-1) = 1 \)