Can someone help me please???

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

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x