Question

For several weeks, a server records the number of desserts, d, ordered by diners at each table and the tip, t, in dollars, he receives from that table. He finds that there is a positive linear association between t and d that is best modeled by the equation t = 1.4d + 9.1.

Answer 1

When a table orders no desserts, the model predicts the server will earn an average tip of $9.10.

Explanation:

It means that when a table orders no desserts, the model predicts the server will earn an average tip of $9.10.

Answer 2

In this equation the 9.1 would represent the amount the tip would have been before the adjustment is made (1.4d) for the dessert.