What is the answers and how do u get those answers

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

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 base of 1/9 to the power of 2