Answer:
(a+b,c)
Step-by-step explanation:
Note that the midpoint formula is:

Point A (0,0) and Point C (2a+2b,2c)
It follows that:

x=4,3,2 or,1 are the possible
Answer:
Only if there 10 students, which isnt likely
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Just divide the 2 rates, so for Candice it would be 11.98 / 2 so 5.99 per pizza.
For Peter just pick any rate, like 23.96 / 4, which would also be 5.99 per pizza.