Answer:
#1 Evaluate f(3) if f(x)=(x-3)^2
Replace x with 3, x=3
f(3)=(3-3)^2
(3-3)=0
0^2=0
#2 Evaluate f(3) if f(x)=x+4/x-2
Replace x with 3, x=3
f(3)=3+4/3-2
7/1 = 7
#3 Evaluate -y+x if x=12 and y=-3
Replace x with 12 and y with -3, x=12, y=-3
-(-3)+12 = 3+12
3+12 = 15
#4 What is the correct value of f(-1) if f(x)= -7x^2+4x-5
Replace x with -1, x=-1
-7(-1)^2 + 4(-1) - 5
= -7(1) -4 -5
= -7-4-5
= -16
Hope this helped! Have a great rest of your day! :)
