Which situation is best modeled by the inequality g ≤ 13?

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

Combine like terms to make a simpler expression 3z+z

Landon wrote that 3−2.6=4. which statement about his answer is true?