The initial price of a water bottle is $1.55. Find the price after a 7% tax and 18% discount.

Samantha’s initial grade is 88. Her final grade is 95. Find the percent change in her grade.

The final price of a computer is $365.This is after a 19% tax and 22% discount. Find the initial price.

Alan initially has 17 friends. He loses some and then has 13 friends. Find the percent change in friends that he has.

Tim buys a soda with initial price of $1.55. Find the price after 2 consecutive discounts of 7% and 8%.

In the year 2000, the town of Smallville had 800 residents. The town grows 4% annually. Find the population in 2005.