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The volume of water in a reservoir decreases 21,000 cubic yards over a 3-month period. What is the average change in volume per month?

Sure. Let V be the total change in volume and t be the number of months. Then, we have:

Average change in volume per month = V / t

Substituting V = 21,000 cubic yards and t = 3, we get:

Average change in volume per month = 21,000 / 3

Simplifying this expression, we get:

Average change in volume per month = 7,000 cubic yards

Therefore, the average change in volume per month is 7,000 cubic yards.

To find the average change in volume per month, we need to divide the total change in volume by the number of months:

Average change in volume per month = Total change in volume / Number of months

In this case, the total change in volume is 21,000 cubic yards and the number of months is 3. So we have:

Average change in volume per month = 21,000 / 3

Simplifying this expression, we get:

Average change in volume per month = 7,000 cubic yards

Therefore, the average change in volume per month is 7,000 cubic yards.

can you do that but as an equation

To find the average change in volume per month, we need to divide the total change in volume by the number of months.

Step 1: Calculate the average change in volume per month.
Average change in volume = Total change in volume / Number of months

Step 2: Substitute the given values into the formula.
Average change in volume = 21,000 cubic yards / 3 months

Step 3: Divide to find the average change in volume per month.
Average change in volume = 7,000 cubic yards per month

Therefore, the average change in volume per month is 7,000 cubic yards.