Answer:
252 cubic yards
Step-by-step explanation:
So to find the volume, we need to multiply the width, length and height. So we have 12*7*3 or 84*3 or 252.
A well-defined model will tell you what represents the number of weeks of growth. Here, we have to assume that ...
x represents the number of weeks of growth.
You can represent this problem by using the multiplication problem 5x4
The 1st selection is appropriate.
The result will be equations with y-coefficients of +4 and -4, which will cancel when they are added.
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If you do the exercise of selection (3), you get x-coefficients of +4 and +4. You can "combine" these by subtracting one from the other to cancel x-terms. This may also be a viable answer to the question, but you might need to argue the meaning of "combined."