Watch out for this guy

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

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.