Help with this question please and thank you!:)

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

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .