To calculate the percent increase in the length of the ivy plant, we can use the formula for percent increase:
\[ \text{Percent Increase} = \left( \frac{\text{New Value} - \text{Old Value}}{\text{Old Value}} \right) \times 100 \]
In this case, the old value is 14 inches and the new value is 30 inches.
- Calculate the increase in length:
\[ 30 - 14 = 16 \text{ inches} \]
- Now plug the values into the percent increase formula:
\[ \text{Percent Increase} = \left( \frac{16}{14} \right) \times 100 \]
- Compute the fraction:
\[ \frac{16}{14} = 1.142857 \]
- Now multiply by 100 to get the percent:
\[ 1.142857 \times 100 = 114.2857 \]
- Rounding to the nearest hundredth, we get:
\[ 114.29 \]
Therefore, the percent increase of the length of the ivy plant is 114.29%.