Pls solve this angle question.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?