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Read the following description of a data set.$\newline$A selection of gemstones is showcased in the window of Greg's jewelry store. Store managers wonder if showing a greater variety will encourage more people to enter the store.The managers monitor other jewelry stores in town over one week. They note the number of gemstone types showcased at each store, $x$, as well as the number of people entering each store, $y$.The least squares regression line of this data set is:$y = 3.785x + 39.148$$\newline$Complete the following sentence:$\newline$If a jewelry store showcases one additional type of gemstone, the least squares regression line predicts an additional ___ people will enter.