NEED ANWSERS FAST
just 6,7,&8 please

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

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.