G(x)=-2x-4
f(x)=15+0.75x
the common solution Q is their intersection-> calculate x by setting them equal:
-2x-4=15+0.75x
-2x-(3/4)x=19
-(11/4)x=19
x=-4*19/11
x=-76/11
calculate y:
f(-76/11)=15+(3/4)*(-76/11)
=15+(-3*19/11)
=15+(-57/11)
=15+-5-(2/11)
=10-(2/11)
=108/11
so the solution is a) (-76/11, 108/11)
I would think you would lower ur price. But I wouldn't make the price so low so that it costs the same to produce them as it does to sell them, because then there would be no profit.
First let's convert the decimal numbers to mixed numbers:

Now, adding all the numbers, we have:

So the correct option is B.