Question

f(10x)=4(10x)/(10x)+5

directions: Find and simplify the following

I have about 100 more of these questions and I am stuck on this one. Could someone please help!!

Answer 1

as you wrote it, it is
f(10x) = 4 + 5
since (10x)/(10x) = 1

Now, if you meant
f(10x) = 4(10x)/(10x+5) then that's
f(10x) = 8x/(2x+1)

And it appears that what you really have is f(x) = 4x/(x+5)

it's a strange one all around ...