The square root of -56 is 7.4833 (feel free to round it up to 7.5)
I hope this helps you!
<u>Given</u>:
The given monomial expression is 
We need to simplify the given monomial expression.
<u>Simplification:</u>
Let us simplify the given expression.
Dividing the numbers 16 and 4, we get;

Let us apply the exponent rule
in the above expression.
Thus, we get;

Subtracting the numbers in the numerator of the above expression, we get;

Thus, the simplified expression is 
Answer:-30
Step-by-step explanation:kinda hard to tell a little shaky so sorry if it is wrong.
B
Its because when you rearrange using this formula y=mx+c, where m is slope, if m is negative then that line has a negative slope
It only has one solution. x= 16 and y = -12