Answer:
x and y = 0
the question looks weird and almost wrong because when you subtract the equations, you are left with nothing
Step-by-step explanation:
Multiply the top equation by 3 to make the -x a -3x instead.
Then do the top equation - the bottom equation
At this point you should be left with x
$27 is the price of 9 hamburgers
Answer:

Step-by-step explanation:
The formula of a midpoint of a segment AB with endpoints at A(x₁, y₁) and B(x₂, y₂):

We have the points P(-6, 3) and Q(9, -11).
Substitute:

Answer:
$75
Step-by-step explanation:
I just guessed numbers until 80% off a number hit 60 and that was 75