Ineed with number 17 i don’t get it at alll

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

What is the location of point g, which partitions the directed line segment from d to f into a 5: 4 ratio? –1 0 2 3

What is the inverse of the function f(x) = 2x + 1?