+0  
 
0
111
2
avatar+326 

solve.

1. e(7)

e(x)=-x^2-9x

2. a(-4)

a(x)=40-x^3

 Jun 1, 2020
 #1
avatar+12 
0

1. e(7)=-72-9(7)

          =-49-63

          =-112

2. a(-4)=40-(-4)3

            =40-(-64) or 40+64

            =104

 Jun 1, 2020
 #2
avatar+326 
0

thank you!

xxJenny1213xx  Jun 2, 2020

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