Help me out please :)

Is the orthocenter of a triangle on the inside ?

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

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