What makes a polynomial a non rational algebraic expression?

What is the value of x? enter your answer in the box.

What is the interquartile range (iqr) of the data set represented by this box plot?

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.