Teresa estimates that the height of a girrafe in a zoo is 18 feet. In fact, it is 16 feet tall. What is Teresa's percent error? Use prepositional relationships to solve the problem.
To find the percent error, we use the formula:
Percent Error = (|Measured Value - Actual Value| / Actual Value) * 100
In this case, the measured value (what Teresa estimated) is 18 feet and the actual value is 16 feet.
So, the percent error is:
(18 - 16) / 16 * 100 = 2 / 16 * 100 = 0.125 * 100 = 12.5%
Therefore, Teresa's percent error is 12.5%.