Answer:
Step-by-step explanation:
4
Answer:
A 109
Step-by-step explanation:
Pentagram's angles add up to 540. After subtracting all the other angles, you are left with 109.
Answer:

Step-by-step explanation:
Let x = number of books that Hannah donated
We know that the number of students is 150 and the total number of books is represented by b, we can write that as:
Average number of books donated by each student = 
Now we know that Hannah donated 3 times as much as the average. We can write that as:

Answer:
B
Step-by-step explanation:
The profit made is equal to 2.25-2.25 which is 0.