Mr. elliot needs to drain his above ground pool before the winter. the graph below represents the relationship between the number of gallons of water remaining in the pool and the number of hours that the pool has drained.

1. write a function that models the situation

2. what is the rate of the change? what does it represent in the context of the problem?

3. what is the x-intercept? what does it represent in the context of the problem?

4. what is the y-intercept? what does it represent in the context of the problem?

5. over which interval, if any, is the function positive? what does it represent in the context of the problem?

6. over the which interval, if any, is the function negative? what does it represent in the context of the problem?