I need help, this is due in 10 minutes ​

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.

The base of a triangle is 8 1 3 meters and the height of the triangle is the fourth root of 16 meters meters. what is the area of the triangle?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base