Step-by-step explanation:
Well, 40 - 8 = 32, since she had 8 remaining. Then divide 32 by 2, since she gave 2 to each of her friends. Therefore, she has 16 friends.
5 + 17a is the answer you are looking for
Answer:

Step-by-step explanation:
Midpoint Formula: 
Simply plug in your coordinates into the midpoint formula to find midpoint:
R(-2, 3)
S(-8, -2)


