which expressions are polynomials? select each correct answer. y, 2+ s x^2 - square root of x + 2, 4x^3 + y​

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

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Triangle knm is what is true about the sides of knm