Question

If f(x)=x2+2x+1 find f (-4)

Answer 1

Compare the algebraically expressed function f(x) = 1/4 x2 - 2x to the function shown in the graph to determine which statement is true.

D) The graphed function has a lower minimum value.

Explanation:

Answer 2

this is really easy once you know what to do. You just have to put in whatever is in the parentheses for f, so in this case f(-4).
It should look like this-- 2(-4)+2(-4)+1
So the answer should be -15