18 cans of soda cost $6.48. What is the cost per can in dollars? Please help, I'm in a hurry

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?

Ineed with number 6 , explain how to get 1978

In the diagram, gef and hef are congruent. what is the value of x