the anwser would be -2 because -2*3*3-2*8 equals -2
P times r times t is wwhat you need to do
First get all the terms on the same side:

Now solve using the quadratic formula which is:

Plug in the values:

So the answer is:
So we know that:
City A is -96ft in elevation
City C is -24ft in elevation
City D is (1/4C)ft in elevation.
So, knowing this we can make an equation: 1/4•-24/1=-24/4=-6
So from that, we get the result of City D being -6ft in elevation, or 6ft below sea level.
(j+5)*8 is what you're looking for. The braces are important.
You could also write as 8j + 40.