Find the digit that makes _2,530 divisible by 9

4+6x-3x^3 in standard form with explanations because i don’t understand

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

10x − 5y + 14 = 0 whats the answer pls