Help me pleasse it’s really late

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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

How to simply and write the answer n a whole number