13. Haley scored \( 93 \% \) on her first math test and \( 86 \% \) on her second test. What is her percent decrease from Test 1 to Test 2 to the nearest tenth? \( \% \)

To calculate Haley's percent decrease from Test 1 to Test 2, you can use the following formula for percent decrease: \[ \text{Percent Decrease} = \left( \frac{\text{Old Score} - \text{New Score}}{\text{Old Score}} \right) \times 100\% \] Plugging in Haley's scores: \[ \text{Percent Decrease} = \left( \frac{93\% - 86\%}{93\%} \right) \times 100\% \] \[ \text{Percent Decrease} = \left( \frac{7}{93} \right) \times 100\% \approx 7.5269\% \] Rounded to the nearest tenth: \[ \text{Percent Decrease} \approx 7.5\% \] **Answer:** 7.5 %