For two weeks during the summer, Miguel tracks the daily high temperature and the total sales at an ice cream stand. He models the relationship with the equation S = 20.5t + 305, where Sis the total daily ice cream sales in dollars and t is the number of degrees over 80°F. For example, t = 10 means a temperature of 80 + 10 = 90°. Find the slope and initial value of the model with the correct units. Explain the relationship between temperature and ice cream sales.