90 + (61 + x) = 180
x + 151 = 180
180 - 151 = 29
x = 29
I believe
Answer:
If you want free points go to my questions
Step-by-step explanation:
Answer:
The option is D

Step-by-step explanation:
Given

put
we get

Similarly,
put
we get

put
we get

If I'm reading your question correctly: "<span>F(x)=7x+9/8x-9 when -f(x)," then all you have to do to find -f(x) would be to put a negative sign in front of ALL
of 7x + 9 / (8x-9):
9
- f(x) = -7x - --------
8x-9</span>