Martha is starting to save for a new laptop. She has been keeping track of her savings every day. The graph shows the number of days since she started keeping track and the amount of money in her savings. She would like to figure out when she might have the $350 she needs to buy the laptop. She wonders if she could use her new math skills on linear regression to help figure it out.

What do you think? Would a linear model be appropriate for this data?