At 4: 00 am, there were 800,000 gallons of water remaining at a reservoir. after 4 hours of irrigation, there were 100,000 gallons of water remaining. write an equation that describes the number of gallons of water as a function of the time the field has been irrigated

The linear equation could be: r = 800,000 - 175,000h, where r represents the amount of water in the reservoir and h represents the number of hours since 4:00 am.

To find this equation, you must first find the slope. Divide the total change in water by the total number hours of the change.

We have:  800000/4 = 175,000  This means that the water is going down by 175,000 gallons per hour.

Now, just add in the starting amount of 800,000 gallons and you have your equation.

Sorry can't answer that question