Interval simply represent the set of numbers containing all numbers between any two numbers.
The representations of
are
and 
From the question, we have:
![(-\infty, -6]](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%20-6%5D)
The above representation is in interval notation.
The interpretation is that;
The highest number in the interval is -6
The equivalent using set notation is:

The equivalent using inequalities is:

Read more about intervals at:
brainly.com/question/17249352
We have two options in the case of the equation for parabola y=ax²:
1) in the case that a is negative the parabola opens down
2) in the case that a is positive the parabola opens up
So the correct answer is: if a is positive, the parabola opens up.
Answer: h(10) = 2(10) - 8h(10) = 12g(12) = root 12 - 4g(12) = root 8g(h(10)) = 2 ro
Step-by-step explanation: Hope this helps :)