Vertex aka max or min point is found by -b/2a in form
f(x)=ax^2+bx+c
f(x)=-1x^2+8x+20
vertex x value is -8/(2)(-1)=-8/-2=4
input back to find y value
f(4)=-(4^2)+8*4+20
f(4)=-16+32+20
f(4)=36
max (since the graph opens down) is (4,36)
axis of symmetry is the x coordinate
max is (4,36)
axis of symmetrry is x=4
Answer: A. they will have too much butter
Step-by-step explanation: to much
Answer:
the first choice
Step-by-step explanation:
32.66 would be the correct answer.
Solution:
we are given that

As we know that

Substitute the value we get

Since 
So here 
As we know that

Hence the correct option is C.