Respuesta :

twvogels
For number 3 The rest are all the same just with different numbers):

[tex]R_{ave}=\frac{f(b)-f(a)}{b-a}[/tex]
[tex]R_{ave}=\frac{f(3)-f(1)}{3-1}[/tex]
[tex]R_{ave}=\frac{(2(3^{2})-20(3))-(2(1^{2})-20(1))}{2}[/tex]
[tex]R_{ave}=\frac{(2(9)-60)-(2(1)-20)}{2}[/tex]
[tex]R_{ave}=\frac{(18-60)-(2-20)}{2}[/tex]
[tex]R_{ave}=\frac{(-42)-(-18)}{2}[/tex]
[tex]R_{ave}=\frac{-24}{2}[/tex]
[tex]R_{ave}=-12[/tex]

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