Answer: angle 1=129 degrees
Step-by-step explanation:
180 - 99 - 30 = 51
all the angles of a triangle should add up to be 180 degrees
51+99+30=180
angle 1 is supplementary to the angle that is 51 degrees so it would be 129 degrees. 180-51=129
 
        
                    
             
        
        
        
Answer:
2
Step-by-step explanation:
f(x)=x^2+1
now,
f(1)=1^2+1
 =1+1
 =2
 
        
             
        
        
        
Answer:
12
Step-by-step explanation:
so basically 
(x^2+2)*(1-3x)=-3x^3+x^2-6x+2
now plug in -1
-3(-1)^3+(-1)^2-6(-1)+2=12
hope this helped :)