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...So, we can throw out all the choices for x that are less than or equal to 0. Similarly,
let x = 1. 1 + 3 > 4 is also false. By similar argument, any choice of x that is less than 1 cannot be greater than 4 (See if student can reconstruct my argument). Be very patient and stress that he/she needs to connect the concepts step by step here. (read more)