HELP HELP HELP HEPL memememememme

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

Measure of angles 31 (x+4) (3x+9) me

Which expression is rational? 6. , square root two, square root 14, square root 49