Answer:
you use the mean method. and then round.
Answer:
She's been charged 84 dollars
Step-by-step explanation:
Let's call each month m
if every month it deducts 7 dollars, then to find how much has been charged after a year, we do
-7 * 12 = -84
Using Rise/Run, the answer would be y= -3/4x + 3.