Teresa estimates that the height of a giraffe in a zoo is 18 feet in fact it is 6 feet tall. What is Teresa’s percent error? use proportional relationship to solve this problem show all your work, and Round your answered to the nearest 10th

To find the percent error, we can use the formula:

Percent Error = (|Estimated Value - Actual Value| / Actual Value) * 100

Plugging in the given values:
Estimated Value = 18 feet
Actual Value = 6 feet

Percent Error = (|18 - 6| / 6) * 100
Percent Error = (12 / 6) * 100
Percent Error = 2 * 100
Percent Error = 200

Teresa's percent error is 200%.