Answer:I believe it is at least that is what I would 
Step-by-step explanation:
 
        
                    
             
        
        
        
Here's what I got for the first question.
Did you want answers for the second one? I couldn't read that part of the image very well, if you did.
 
        
        
        
Ok soo
-5x+x/2=9
- 4x/2=9
-(2^2-1 *x)=9
2x/2=- 9/2
x=- 9/2
x= -4 1/2
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Look what happens if you do the multiplication of P(x):
P(x) = x^3 - 9x 
This is a variation of the basic cubing function y = x^3.
The graph begins in QIII and ends in QI; in other words, if you go left the graph drops; if you go right, the graph rises (without limit, in both cases).
 
        
             
        
        
        
see the attached figure to better understand the problem
we know that
If a and b are parallel lines 
then
m∠1=m∠4 --------> by alternate exterior angles
m∠3+m∠4= --------> by supplementary angles
 --------> by supplementary angles
so
m∠3+m∠1=
therefore
<u>the answer is the option</u>
m∠1 = 110° and m∠3 = 70°