The area of a rectangle is 65 m^2 , and the length of the rectangle is 3 m less that twice the width

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

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?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?