(Solved): only answer questions 1 and 4 please! make sure answers are in exact form woth no decimals.  Fo ...

For questions (1)-(4), find the indicated limits. (1). \( \lim _{x \rightarrow 5} \frac{x^{2}+2 x-15}{x^{2}-25} \) (2). \( \lim _{h \rightarrow 0} \frac{(4+h)^{2}-16}{h} \) (3). \( \lim _{x \rightarrow 2} \frac{2}{6-3 x} \) (4). \( \lim _{x \rightarrow 0} \frac{\sqrt{x+9}-3}{x} \)