Vertical stretch of 2, horizontal shift left 1 unit, vertical shift down 9 units

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

Evaluate the expression. (9 + 5)(3 + 2)0

Multiplying fractions by whole number 5 x 1/3=?