The length of a wall is 12x + 4 feet. A
couch is placed along the wall that is
2x+ 2 feet long. Find the amount of
open space along the wall.

Lisa works at a retail store. She has a
coupon for $10.00 off her next purchase.She also receives a 20% employee discount. Find the amount of her purchase if the coupon is applied before her employee discount.

The population of a town increases by (x+1)% each year after 2000. In 2000,the population was 10,000. Find the population x years after 2000.

A new strain of bacteria is studied in a lab.The lab begins with 10,000 bacteria and observes a 20% growth everyday. Find the amount of bacteria after (x + 1) days.