N decreased by 9 is 5

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

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76