You would choose a cost that will increase each time a cookie is added
If the length is X
X+X+X = 9X+6
3X=9X+6
-6X=6
X=-1
but because length can't be negative X=1
If anything is in parentheses do that first, however if there isn’t you always do exponents next so evaluate 6 squared
Hope this helps!!
16) yes, they are reflections on a summit.
17) no parallelogram shown to answer question <span />
