Question 1204639
use f(x)=-2x+4 and g(x)=x^2-3x to determine or simplify the following 
(a)f(3)

 f(x)=-2x+4

f(3)=−2(3)+4=−6+4=−2


(b)  g(-2)

 g(x)=x^2-3x
g(−2)=(−2)^2−3(−2)=4+6=10


(c)g(f(3))
f(3)=−2.
g(-2) =(-2)^2 -(3)(-2)=10