can anyone help me in math, for free? i'm in 8th grade. it's mostly scientific notation, modules, pythagorean theorem, and functions. you have to have some type of social media! (ig, snap, dc, ect)

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