30 points!
Since there are a few questions please help.

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

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)