Answer:
Your annswer is b
Step-by-step explanation: because it is least than all of the others
A^2-64=0 you can factor like this:
(a+8)(a-8)=0 and since a>0, a must be 8
or you can do this:
add 64 to both sides of the equation leaving you with:
a^2=64 taking the square root of both sides
a=(-8,+8) and since a>0, a=8
The vertex formula:

(h, k) - vertex
We have vertex (2, 3). Therefore:

We know that the parabola passes (1, -7).
Put the coordinates of this point into the function equation
x = 1, f(x) = -7

Therefore we have:

Use 

<h3>Answer: f(x) = -10x² + 40x - 37</h3>
Answer:
A and E
Step-by-step explanation:
| 16 | = 16
|-16| = 16
X=-6 and x=1/3 are both correct values so A and D