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Mathematics 14 Online
OpenStudy (anonymous):

Due in 5 minutes. Please help! Samantha plans to build a garden in her backyard. Depending on the time of year, the area required for the plants in the garden changes. The area of the garden can be determined by the function below, where x represents the width of the garden in feet. A(x) = 3x^2 + 6x What is the average rate of change over the interval [10, 15]? A. 153 square feet per foot B. 36 square feet per foot C. 57 square feet per foot D. 81 square feet per foot

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