We have 8 yards of wrapping paper if we used 2 feet for each present how many presents can we wrap

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?

Plzzz answer both questions and i will give you 100 points

Change negative exponents to positive, then solve