Answer:
a 1,2.3,4,8,12 i think thats all
Answer:
So these two equation can be related by identity 
Step-by-step explanation:
We have given equation 
And 
We know the algebraic identity 
From this identity
can be written as (x+1) (x-1)
And using same identity
can be written as 
So these two equation can be related by identity 
Inequality, because want to know when we'll make a profit.

Profit: Let's See When 280d equals 52000

So, after 190 days Julianne will make a profit
Parabola
It's not always easy to visualize this stuff. Do a Google image search for "3D Conic Sections" and take a look at a bunch of the results. That may help a bit. Let me know if you have any other questions.