What are the coordinates for the origin of the coordinate plane?

What is the value of the expression below? (81^2)^1/8

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

One positive number is 9 more than twice another. if their product is 95, find the numbers