Answer:
f(x)=x-3
Step-by-step explanation:
You are given x-y=3 and you want to rewrite in function notation with x being the independent. That means we need to solve for y so y can depend on x.
x-y=3
Subtract x on both sides:
-y=-x+3
Multiply both sides by -1:
y=x -3
So function notation would be f(x)=x-3
length = 2w - 3
l = length
w = width
2(length) + 2(width) = perimeter
2(2w - 3) + 2(w) = 60
6w -6 =60
w = 11
len = 2(11) - 3
