1. f(x) = 2x + 6 Evaluate f(2) 2. f(x) = 3x Evaluate f(a + 1) 3. f(x) = 3x – 1 and g(x) = 5x + 3 Evaluate f(2) + g(3)
(1) Answers
1) f(x)=2x+6 f(2)=2(2)+6 =4+6 =10 2)f(x)=3x f(a+1)=3(a+1) =3a+3 3)f(x)=3x-1 and g(x)=5x+3 f(2)=3(2)-1 f(2)=6-1 =5 g(3)=5x+3 =5(3)+32 =15+3 =18 f(2)+f(3)=5+18 =23.
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