1 answer:
            
              
              
                
                
Answer:
A: 5
B: 6
C: 3x^2 - 2x
D: 8
E: 22
Step-by-step explanation:
A: (-1)^2 + 4 = 5
B: (-4)^2 +4 = 16 
2 x (-3) -4 = -10, 
16-10=6
C: 3(x^2 + 4) = 3x^2 + 12
3x^2 + 12 -2x -4, simplify
3x^2 - 2x
D: g(3) = 2*3 -4 = 2
f(2) = 2^2 +4 = 8
E:  f(3) = 3^2 + 4 = 13
g(13) = 2*13 - 4 = 22
 
                                
             
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X f πxf 
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3 1 3
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 total =3
mean (π)=πxf ÷n
 = 3÷4
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