Answer:
on the 5th week they would both have the same amount of money they would both have a total of 85$
Step-by-step explanation:
Answer:
-1 I think
Step-by-step explanation:
5-3=2 and -1+3=2
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:

Estimation:
23 --> rounded to 20
71 --> rounded to 70
70 + 20 = 90. I rounded both numbers down so the exact sum must be only a little greater than my estimate.