Read the following description of a data set.

The owner of Grizzly Tea Shack is thinking about adding iced tea to the menu. She thinks she can do this with minimal effort by adding ice cubes to cups of hot tea. She decides to measure how changing the number of ice cubes in a glass of freshly brewed tea affects its cooling rate.
To begin, the owner varies the number of ice cubes, x, she puts in glasses of freshly brewed tea. She then checks the temperature (in Celsius), y, of each glass after 10 minutes.
The least squares regression line of this data set is:
y=
–
4.679x+30.033
Complete the following sentence:
For each additional ice cube added to a glass, the least squares regression line predicts that the temperature will be
degrees lower after 10 minutes.