Question

If f(x)=4/x, find in simplest form:

a.) f(x/2)
b.) 4f(x+2)-3

Answer 1

4/x is simplest form lol I think.

Answer 2

a.
f(x/2)
4/(x/2)
8/x

b.
4f(x+2)-3
4 * 4/(x+2) - 3
16/(x+2) - 3
16/(x+2) - 3(x+2)/(x+2)
16/(x+2) - (3x+6)/(x+2)
(10-3x)/(x+2)

Answer 3

lol it says the answer is 2/x , but idk how to get that..

Answer 4

f(something other than x) = whatever you get when you plug in the "something other than x" into the original equation in place of x and simplify

Answer 5

the answer to a is not 2/x. it's 8/x like Nurali did it.