Solve: negative 1 over 2x + 1 = −x + 8

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

Ineed i been stuck on this question since yesterday

Nikolas calculated the volume of the prism. his work is shown below.