ILL GIVE BRAINLEST What is the independent variable (x) for this situation?

number of cases of paper

not enough information to determine independent quantity

cases of paper per tree

number of trees used

trees used per case of paper

Number of trees used

Step-by-step explanation:

The number of trees used is the independent variable because it doesn't depend on anything, meaning it isn't changed by other variables. The number of cases of paper would be the dependent variable because it depends on the number of trees used.

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step-by-step explanation:

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x = ± 6i

step-by-step explanation:

x^2 = -36

take the square root of each side

sqrt(x^2) = sqrt(-36)

we know sqrt(ab) = sqrt(a) sqrt(b)

x = ±sqrt(36) sqrt(-1)

we know that sqrt (-1) = i

x = ± 6i