\left(\mathrm{Decimal:\quad }x=-0.75\right)
hope it helps :P
Answer:
x=36° (180/5x because 2x+3x)
Step-by-step explanation:
Radii? Please explain what that means
This is a composite. Another way to write them is f(g(x)). Take the function g(x) and stick it in for x in f(x). Like this:

. But we aren't done cuz there's some simplifying there to do.

and canceling out the 3's we get just a simple x as our answer. The choice is the last one above as your answer.
First you would add 5 to both sides
X/8=3
Then multiply both sides by 8
X=24