A used book store also started selling used CDs and DVDs. In the first week, the store sold 40 used CDs and DVDs, at $6.00 per CD and $4.00 per DVD. The sales for both CDs and DVDs totaled $180.00. Write a system of equations to
represent this situation

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

What is the average diastolic blood pressure for adults