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 the 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 the percent error, we first need to find the difference between the estimated height and the actual height: 18 feet - 16 feet = 2 feet
Next, we need to find the relative difference, as a fraction, between the two heights: 2 feet / 16 feet = 1/8
Finally, we need to convert this fraction to a percentage by multiplying it by 100: (1/8) * 100 = 12.5%
Therefore, Teresa's percent error is 12.5%.