Answer:
D. 4
Step-by-step explanation:
x=2, y=4 on the graph
Therefore, f(2)=4
~
Hope this helps!
Multiply 4.51 by 3.4
That's all it is asking you
Answer:
c
Step-by-step explanation:
-2.25*3 = 6.75 decreased (since negative)

A parabola is open up if a > 0.
The vertex formula:

(h; k) - the coordinates of the vertex

Therefore h = -5 < 0
Answer: B. y = x² + 10x + 24.
Answer:

Step-by-step explanation:
We see that this is a rectangle triangle, and that the ZY side is the hypotenuse.
It's length is then square root of the sum of the squares of the other sides:

So, in this case:

The 8 and 3 numbers are easy to get from the graphic... and the order doesn't matter (8² + 3² = 3² + 8²).
That's an easy rule to remember.
I hope it helps.