I need help with this problem if you don't mind show me the work as well thanks! someone explain pls.

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

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

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?