PLEASE HELP, THIS IS DUE TODAY!

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 the system of equations y= 3/2 - 1, -x+ y =-3

Does the point (1, sqrt 7) lie on circle shown.