Roxanne wants to test the idea that polynomials are closed under addition. Her work and explanation are shown Drag the expirations and phrases to the boxes to complete the equation

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Do you mind if you guys me with this question i’m on number 8

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1