![-4^4](https://tex.z-dn.net/?f=-4%5E4)
when we have an exponent means that the base is multiplied times the number that is as the exponent, since there is no parentheses the exponent only affects the 4
![-(4)^4=-1\cdot4\cdot4\cdot4\cdot4](https://tex.z-dn.net/?f=-%284%29%5E4%3D-1%5Ccdot4%5Ccdot4%5Ccdot4%5Ccdot4)
I have no clue
Maybe cause they think its important to learn
This is a quadratic equation. You have to factor it.
You have to find two numbers that meet the following requirement:
-When multiplied, is equal to -18.
-When added, is equal to 3.
The two numbers are 6 and -3.
Now factor it:
(x + 6)(x - 3)
So x = -6 or x = 3
It is going to be 15x if you are trying to simplify it
J not here because
Brand C does not have a lower unit cost than brand B
Brands D does not have a higher cost than brand A
And brand A and C don’t have the same cost