Answer:
4x - 2y = -8--------equation 1
y = 2x + 4
or, -2x+y=4---------equation 2
multiply equation 2 by 2 and solving equation 1and2 we get,
4x - 2y = -8
-4x+2y=8
---------------=
impossible
Answer:
that description would produce a negative slope..
see image
Step-by-step explanation:
If we take 85 to be the 100%, how much is the retail price, namely the 170%?

so the retail price is "x", thus the profit will be x - 85.
Use the equation 32,000(1+0.09/1)^1*10 and solve
the answer is $75,756