I need help with the red answer

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

Write 17/20 as a decimal and as a percent.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36