In looking through company files, you discover that the former manager collected considerable data. Last summer, a typical week produced the following data:

Day	Temperature (degrees Fahrenheit)	Number of Transactions	Gross Receipts (in dollars)
Monday	78	238	3014
Tuesday	73	194	2842
Wednesday	70	172	2141
Thursday	75	185	2235
Friday	83	270	4505
Saturday	89	320	5021
Sunday	94	280	4442

1. Based on your data, predict the number of transactions if the temperature reaches 98 °. Explain how you made this prediction and how accurate you think it is.
2. Based on your data, predict the gross receipts if the temperature is 80°. Explain how you made this prediction and how accurate you think it is.
3. Based on your data, predict the number of transactions if the temperature falls to 65 °. Explain how you made this prediction and how accurate you think it is.
4. As the number of transactions increases, what can you say about the gross receipts? Explain how you arrived at your conclusion.
5. Functions are mathematical models for defining relationships between variables. In your own words, describe the functions in this scenario.
6. Describe the other functions which last year's manager neglected to consider.