Are these equivalent or not? 2.5(3+x) and 2.5x+7.5

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 value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2