A. Leo: I know that I cannot take the square root of a negative number so, that

Question

A. Leo: I know that I cannot take the square root of a negative number so, that means x must be any number greater than or equal to 0.

B. Marsha: I would graph the function g in Desmos and see what x-values the graph uses.

C. Claudio: I know I cannot square root a negative number. That means x+1 must be greater than or equal to 0. So, x is bigger than or equal to -1.

D. Susan: The valid inputs of this function are numbers bigger than zero, because if you input any other number, you would get a negative under a square root.

Explanation / Answer

Susan method will work because value of function in square root must be greater than or equal to zero that is value of 1-x should be greater than or equal to zero hence x should be less than equal to 1 in order to have valid inputs

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