Teresa estimates that the height of a giraffe in a zoo is 18 feet. In fact, it is 16 feet tall. What is Teresa’s percent error? Use proportional relationships to solve the problem. Be sure to show all your work, provide your answer as a percentage, and round your answer to the nearest tenth.
To find Teresa's percent error, we need to compare her estimate to the actual height of the giraffe.
First, we need to find the difference between Teresa's estimate and the actual height: 18 feet - 16 feet = 2 feet
Next, we need to find the percent error by dividing the difference by the actual height and then multiplying by 100: 2 feet / 16 feet * 100% = 12.5%
Therefore, Teresa's percent error is 12.5%.