Sometimes and 2 I think that is the answer
Answer: 5
15/3 = 5
There are 5 doughnuts left.
The unit rate for that equation is .33
C = 22d is the correct answer because for every day the cost increases by 22 so two days mean the cost is equal to 22 (2)
F(x) = (-x²+x+20) / (x+4)
-x²+x+20 | x+4
+x²+4x -x+5
\\\\ 5x+20
-5x-20
\\\\\\\\\
f(x) = (x+4)(-x+5) / (x+4)
f(x) = (-x+5)
The graph is a decreasing line, with origin from 5.