Write a linear equation for the statement below:
The students in a high school environmental club are trying to raise community awareness of a recycling program for old cell phones. Janie, a member of the club, created a website that members of the community can view to get more information about the program. The number of times the website is viewed each day is recorded as a hit. On day 1, the website received 100 hits, and on day 3 the website received 81 hits.