Firstly you work out 20% of 25 then subtract it.
So 20% of 25 is 5. then you do 25-5 which is 20.
Answer:
The answer is A.
Step-by-step explanation:
Hope this helped! :)
The statement above is represented in the figure below. We have plotted the focus, the directrix and the parabola. So we know that the parabola opens downward. We also know that:

Because this is true the equation of the parabola is:

So our goal is to find the value of

. Given that the parabola opens downward, then

and from the figure:

Accordingly:

Finally,
the right answer is <span>
f(x) = − one sixteenth x2</span>
The "line of best fit" is the result of a linear regression computation. If you have done that, you already know its equation.
If you have "eye-balled" the line into place, then you have to figure out its equation from points you read on the graph. We take a couple of the points to be ... (2001, 1700) and (2010, 2450)
The line through these points will have the equation
... y = (2450 -1700)/(2010 -2001)(x -2001) +1700
... y = (250/3)(x -2001) +1700
Putting x=2013 into this equation, we get ...
... y = (250/3)(2013 -2001) +1700
... = (250/3)(12) +1700
... y = 2700
The population is predicted to be 2700 in 2013.
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Had you drawn your graph with a vertical grid line at 2013, you could have read the number from the graph.