Ms. Holly had a gift card with a $375 balance. She bought several CDs that cost $17 each. After the purchase, her gift card balance was $239. Which equation can be used to determine the number of CDs, d, she purchased? PLEASE SHOW YOUR WORK
WILL MARK BRAINLIEST!!!

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?

The length and width of a rectangle are consecutive even integers the area of the rectangle is 120 squares units what are the length and width of the rectangle

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?