Without the actual scatterplot, I can't provide a precise prediction for the crime index of a city with a population of 220,000. However, you can estimate the crime index based on the trend shown in the scatterplot.
To make a prediction, locate 220,000 on the x-axis (population) of the scatterplot and see where it aligns vertically to find its corresponding crime index on the y-axis. Based on the options you provided (450, 465, 500, 550), you would choose the value that appears closest to that intersection.
If you have access to the scatterplot, you can apply this method to determine the most accurate prediction based on the observed data.