Y=7
X=-3
The following graph
        
             
        
        
        
Let's simplify step-by-step.
<span><span><span>a2</span>−<span><span>10a</span>b</span></span>+<span>3<span>b2
</span></span></span>There are no like terms.
Answer:
<span>=<span><span><span>a2</span>−<span><span>10a</span>b</span></span>+<span>3<span>b<span>2</span></span></span></span></span>
        
             
        
        
        
- 1 1/3 - 2  1/5
= -4/3 - 11/5
= -20/15 - 33/15
= -53/15 
= -3 8/15 mg/L
        
                    
             
        
        
        
C. -2° :) hope this helps lmk!