Answer:
a) f(6)=(6)^2+4(6)+1=65
b)f (x+9)=(x+9)^2+4 (x+9)+1=(x^2+18x+81)+(4x+36)+1=x^2+22x+117
f (-x)=(-x)^2-4x+1
Area of circle = πr^2
Area of circle when diameter is 2x; r=x
=πx^2
39.46
Step-by-step explanation:
i will do it
3(360⁰)-335⁰
=1080⁰-335⁰
=745⁰ is a positive angle.
