F(x) = (x^2) + x + C at (1,1)
1 = 1 + 1 + C
-1 = C
so,
F(x) = (x^2) + x - 1
The rate of change for this function is 1/2.
In order to find the rate of change, you use the slope equation.
m (slope) = (y2 - y1)/(x2 - x1)
m = (4 - 2)/(9 - 5)
m = 2/4
m = 1/2
It will be 4f-30. Using substitution, you get (-8f-12) + (12f-18). Adding this together you get -8f-12+12f-18. Then you add -8f and 12f to get 4f, and add -12 and -18 to get -30.
Answer: So, if it just magically doubles every 20 days, and its only been 15 days, then it would've started with 42, but I'm not sure since I can't see the original problem
Step-by-step explanation:
