Answer:
$
Step-by-step explanation:
Let 
the cost of one brownie, 
cost of one cookie
Times 
on both sides on the second equation above to get the following:
To find the value of 
, use substitution:
the cost of a brownie is $
Hope this helps :)
The hypotenuse would be square root of 41
If you are imposing the x=-9 then, the problem would be set up like this:
=-9-3(-9)+5
=-9-(-27)+5
=18+5
=23
x=-3
This is because when a line is vertical, then it has an undefined slope and so it must have a value for x only. This shows it must be x=-3.
So the formula is πrL
so
π×8×5
125.6cm2
hopes that correct :)
