What is the value of 2^2+6^2÷2^2 PLZ HELP ME

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

100 points, hi, i’m not sure how to get the equation from the graph and table.

What is the result of adding the system of equations? 2x+y=4 3x-y=6