A I think is correct, but you may want to get a second opinion.
Answer: y=2
Step-by-step explanation:
2x+3y=14 - 2x-y=6 = 4y=8
y=2
If you need x, just insert y into the equation and work out x from there
2x-2=6
2x=8
x=4
23.8% of 164 is 39.032 so minus that off of 164 and you would've sold 124.968 cars and im guessing you should round so the dealership would've sold 125 cars.
None they are parallel lines - same slope different y intercept
ANSWER
D.

EXPLANATION
The standard equation of the hyperbola is

We multiply through by 36 to obtain:

We now expand to get,

Expand :

To get the general form, we equate everything to zero to get,

The correct choice is D.