If f(x) = 1 - x, which value is equivalent to |f(i)|?

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Do 12/14 and 8/10 have the same value? explain your answer.

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?