The answer is B 12 because 12*5=60 and 2*6=12
No the result will not be the original quantity, it will be less than the original.
Example: 100 increased by 25% becomes 125. 125 decreased by 25% becomes 93.75. This holds true for any number.
This is because you are taking 25% of the marked up number and not the original number.
Standard form is ax+by=c
to find the slope, do, -a/b
-a/b=-3/2
-a=-3
b=2
a=3
3x+2y=c
find c
plot the point
(8,-12)
(x,y)
x=8
y=-12
3(8)+2(-12)=c
24-24=c
0=c
3x+2y=0 or
y=-3/2x
9.945*10^30 Kg - 1.7901*10^32 Kg
This is on average what the mass of a black hole.