Why might working on a commission basis make dealing with finances more difficult

Rearrange the formula c^2 = a^2 + b^2 for b

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

Is the square root of 4 plus the square root of 16 rational?