What is the equation in slope intercept form of the line that is perpendicular to given line and passes through the point (0,9)?

Which of these choices show a pair of equivalent expressions?

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?

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)