Kori has $1500 saved up from her part-time job to spend on vacation over summer break. She tracks how much money she has left as the summer progresses. The following scatterplot shows the data she has collected so far.

Question

Based on the scatterplot, which of the following is the most reasonable estimate for when the $1500 that Kori has to spend will run out.

A. 30 days; a reasonable line best fit for this graph is y=-50x+1500. when y=0,x=30
B. 40 days; A reasonable line of best fit for this graph is y=-25x+1000. When y=0, x=40
C. 60 days; A reasonable line of best fit for this graph is y= -25x+1500. When y=0, x=60
D. 1,475 days' a reasonable line best fit for this graph is y= -25x +1500. when y=0, x=1475

Answer 1

B. 40 days; A reasonable line of best fit for this graph is y=-25x+1000. When y=0, x=40

This estimate is the most reasonable as it shows that Kori will run out of money in approximately 40 days based on the trend of her spending.