At a restaurant, brandy paid twice as much as katie, and katie paid $3 more than stephanie. if the total combined amount they paid was $56, how much did katie pay?

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