Jeremy goes to the circus. He thinks he will need $30 for the rides but he only spends $19.75. Find the percent error. Round to the nearest whole number.

The percent error is calculated by taking the absolute difference between the expected value and the actual value, dividing it by the expected value, and then multiplying by 100%.

The expected value is $30 and the actual value is $19.75.

The absolute difference is |30 - 19.75| = $10.25.

So the percent error is (10.25/30) * 100% = 34.17%.

Rounded to the nearest whole number, the percent error is 34%. Answer: \boxed{34}.

To find the percent error, you need to compare the difference between the estimated value and the actual value to the estimated value, and then express that difference as a percentage.

First, find the difference between the estimated value and the actual value:
Difference = Estimated value - Actual value
Difference = $30 - $19.75
Difference = $10.25

Next, express the difference as a percentage:
Percent Error = (Difference / Estimated value) * 100
Percent Error = (10.25 / 30) * 100
Percent Error ≈ 34.17

Rounding to the nearest whole number, the percent error is approximately 34%.

To find the percent error, we first need to calculate the difference between the expected value and the actual value. In this case, the expected value is $30 and the actual value is $19.75.

Difference = Expected value - Actual value = $30 - $19.75 = $10.25

Next, we need to calculate the percent error. The formula for percent error is:

Percent Error = (Difference / Expected value) * 100

Percent Error = ($10.25 / $30) * 100 ≈ 0.3417 * 100 ≈ 34.17

Rounded to the nearest whole number, the percent error is approximately 34%.