Someone help MATH EXPERTS ! Points 15

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

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

Evaluate the expression for the given value of the variable 7a - 4a for a =8