Can someone help me please???

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

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

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?