Is the square root of 3 irrational or rational ?

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

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

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?