Which of the following is a parent function picture shown

I believe that it's f(x)=2^x. A parent function always goes through the origin in some way. 

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3