31 i will mark brainiest and award points, provide work or you will not be qualified to be marked brainest

which equation best represents a trend line for the scatter plot?

y=x+20

y=12x+40

y=12x+30

y=x+30

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?