An agricultural scientist studying the growth of corn animals recorded the height of a corn animal at the beginning of

Question

An agricultural scientist studying the growth of corn animals recorded the height of a corn animal at the beginning of a study and the height of the animal each day for the next 12 days. The scientist found that the height of the animal increased by an average of 1.20 centimeters per day for the 12 days. If the height of the animal on the last day of the study was 36.8 centimeters, what was the height, in centimeters, of the corn animal at the beginning of the study?

Accepted Answer

The correct answer is 22.4. If the height of the animal increased by an average of 1.20 centimeters per day for 12 days, then its total growth over the 12 days was centimeters. The animal was 36.8 centimeters tall after 12 days, so at the beginning of the study its height was centimeters. Note that 22.4 and 112/5 are examples of ways to enter a correct answer. Alternate approach: The equation can be used to represent this situation, where h is the height of the animal, in centimeters, at the beginning of the study. Solving this equation for h yields 22.4 centimeters.

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