PLEASE HELP! I’m so bad at math it’s not funny

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

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Given abcd ac=38 and ae=3x+4 find the value of x