Use table 1 to find the: total number of books donated; sectorial angles of each student.

Buyah stayed in the hotel.
Since it's a leap year:

• February has 29 days (from Feb 1 to Feb 29).
• March has 31 days (from Mar 1 to Mar 31).
• April has 15 days (from Apr 1 to Apr 15). Total number of days = $29 + 31 + 15 = 75$ days.

Cost per night = Le 20.00
Total cost = Total number of days $\times$ Cost per night
Total cost = $75 \times \text{Le } 20.00 = \text{Le } 1,500.00$
Mr. Buyah will pay $\boxed{\text{Le } 1,500.00}$.

5. Table 1 shows the number of books donated to six students by an NGO.

Total books = $150 + 130 + 160 + 100 + 60 + 120 = 720$
The total number of books donated is $\boxed{720}$.

• Mariam: $\frac{150}{720} \times 360^\circ = \frac{150}{2} = 75^\circ$
• Abu: $\frac{130}{720} \times 360^\circ = \frac{130}{2} = 65^\circ$
• Isha: $\frac{160}{720} \times 360^\circ = \frac{160}{2} = 80^\circ$
• Janet: $\frac{100}{720} \times 360^\circ = \frac{100}{2} = 50^\circ$
• Alle: $\frac{60}{720} \times 360^\circ = \frac{60}{2} = 30^\circ$
• James: $\frac{120}{720} \times 360^\circ = \frac{120}{2} = 60^\circ$

The sectorial angles for each student are:

• Mariam: $\boxed{75^\circ}$
• Abu: $\boxed{65^\circ}$
• Isha: $\boxed{80^\circ}$
• Janet: $\boxed{50^\circ}$
• Alle: $\boxed{30^\circ}$
• James: $\boxed{60^\circ}$