Which of the following is not a rational number?

Help please

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

A. plot the data for the functions f(x) and g(x) on a grid and connect the points. x -2 -1 0 1 2 f(x) 1/9 1/3 1 3 9 x -2 -1 0 1 2 g(x) -4 -2 0 2 4 b. which function could be described as exponential and which as linear? explain. c. if the functions continue with the same pattern, will the function values ever be equal? if so, give estimates for the value of x that will make the function values equals. if not, explain why the function values will never be equal.

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume