Answer:
Click the third one, I hope I helped, and have a good day :)
There are three things you have to know:
- A function is convex when its second derivative
- A function is concave when it second derivative
- The derivative of a power,
, is 
So, the first derivative is
and the second derivative is
This implies that the second derivative of a parabola is constant, and of course that 2 doesn't change the sign of 
.
They need to be like terms (so change the denominators into things that match)
<u>1 </u>x3 = <u>3</u>
4 x3 = 12
<u>1 </u>x4 = <u>4</u>
3 x4 = 12
4/12 + 3/12 = 7/12
So, 7/12 of the money was spent.
Answer:
f(x) = x^3
Step-by-step explanation:
f(x) = (1/4x )^3
y = f(Cx)
y = x^3 and C = 1/4
This function is stretched in the x direction
The parent function is x^3
Can you attach the graph?
But what you have to do is do find -2 on your graph and see the point there. Since f(-2) needs to have -2 in the x of the point, the (-3,0) and (1,0) dont matter. So check your graph for the points (-2, 2) and (-2, 1). Whatever point on your graph matches, then thats the answer
