if you help out on this and do all answers i well create another 4 with 100 points so you get 50 each time for free i need help i have it at a low number so people dont scam help also in total i well give 200 points to those who help with all questions

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

What is the solution of sqrt x+2-15=-3

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is