Whats the answer? I dont even know where to start

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

Describe a situation that you could represent with the inequality x< 17