PART A: the function is
Y=25x+80
X represents the number of months.
PART B:
You plug in 6 for X
(25*6)+80=230
-6x-x^2-8 = -(x+2) x (x+4)
(This is if you are factoring the expression)
Answer:

Step-by-step explanation:
I'm assuming this is multiple choice and you forgot to post the answers. I'll take a guess and say it probably looks something like this:

Because you can't take the square root of a negative number without getting an imaginary result, resulting in the function having a closed domain limit.
Answer:
C
Step-by-step explanation: