Read the following description of a data set.
Alice is designing a computer game and isn't sure how many characters to include. To help her decide, she looked at some similar games that were recently released.
For each of the games, Alice noted the number of characters, x, and the number of copies sold, y.
The least squares regression line of this data set is:
y= 3316.738x + 91,973.339
Complete the following sentence:
For each additional character, the least squares regression line predicts that a game would sell_____ more copies.