The scatter plot shows the relationship between the average number of nightly customers and the number of months since a restaurant opened. The equation represents the linear model for this data. y = 5x + 120 What does the number 120 in the equation mean in this context? The restaurant has been open for 120 months. There were 120 customers per month after the restaurant was open 5 months. The number of customers per night increases by 120 each month. For every 5 months the restaurant has been open, there are 120 more customers per night. There were 120 customers per night when the restaurant opened. Number of Customers 300 270- 240- 210- L 180- ! 150- 120- Average nightly customers'