To find out how many reams of paper Landscape Elementary uses each week, you can divide the total reams used in 3 weeks by the number of weeks.
Given that they use 14 reams of paper every 3 weeks, you can calculate the weekly usage as follows:
\[ \text{Weekly usage} = \frac{\text{Total reams}}{\text{Number of weeks}} = \frac{14 \text{ reams}}{3 \text{ weeks}} \approx 4.6667 \text{ reams/week} \]
Now, rounding this to the nearest hundredth gives:
\[ 4.67 \text{ reams/week} \]
So, Landscape Elementary uses approximately 4.67 reams of paper per week.