Select the correct location on the image. The suppy and denand curves for vintage vinyl records are shown. Where Is the equlibrlum polnt?

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

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

How to do this , and can some one explain