Question 1203895
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Answer: y = 2x + 6


Reason:


The equation is in y = mx+b form
m = 2 = slope
b = 6 = y intercept 


The slope tells us how much the coin count increases. In this case, it's 2 quarters per day. 
The y intercept is the starting coin count. 


If x = 0, then,
y = 2x + 6
y = 2*0 + 6
y = 6
There are y = 6 quarters after x = 0 days (i.e. the starting day).


If x = 1, then,
y = 2x + 6
y = 2*1 + 6
y = 8
There are y = 8 quarters after x = 1 day 


If x = 2, then,
y = 2x + 6
y = 2*2 + 6
y = 10
There are y = 10 quarters after x = 2 days
And so on. 
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