As an estimation we are told 5 miles is 8km. Convert 84 km to miles

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

In 1995 america online had about 3000000 users over the next decade users are expected to increase from a few million to the tens of millions suppose the number of users increased by 150% by the year 2000 how many users will there be in the year 2000

A. 530 ft^2 b. 500 ft^2 c. 470 ft^2 d. 450 ft^2