Last year, John earned $7.50 per hour working at a video store. This year, he is earning $8.10 at the same job. By what percent did John's hourly rate increase? ​

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)

b. 20: 5

explanation:

20% of the worlds population lives in southwest asia, and less than 5% of the world's

land area.