The number A of varieties of native prairie grasses per acre within a farming region is approsimated by the model A-10.5 100, osKs 24 where x is the number of months since the farming region was plowed. Use this model to approximate the number of months since the region was plowed using a test acre for which A-90. (Roond your answer to the nearest month.) months

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A: Given A→=B→

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Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as: