I REALLY NEED HELP PLZZ

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

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

If there are 3.281 feet in 1 meter, how many inches are in one centimeter