
Replace f(x) and f(x+h) by using the equation given for the problem.

Open all parenthesis

Factor the h

Other terms not in the parenthesis cancel each other out

Now, simplify
What do bones do?
1.) They help us keep our structure.
2.) They protect inner organs.
3.) They produce blood cells in bone marrow.
4.) They allow us to move.
5.) They store minerals and some fats.
I hope this helps!
I would add like terms, meaning subtract 6.4 from both sides.
3.5n = 36.1