Consider the function f x 3x 7x For this function there are four important intervals A A B B C and C o where A and C are the critical numbers and the function is not defined at B Find A and B and C For each of the following open intervals tell whether f x is increasing or decreasing A Select an answer A B Select an answer B C Select an answer C 0 Select an answer Note that this function has no inflection points but we can still consider its concavity For each of the following intervals tell whether f x is concave up or concave down B Select an answer Box Select an answer