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. Show all your work and round your answer to the nearest tenth.(4 points)
To find Teresa's percent error, we need to find the difference between her estimate and the actual value, and then divide that by the actual value and multiply by 100.
The difference between her estimate and the actual value is 18 - 16 = 2.
To find the percent error, we divide 2 by the actual value (16) and multiply by 100:
2/16 * 100 = 12.5%.
Therefore, Teresa's percent error is 12.5%.