I hope this helps you
y-1=16x^2
x^2=y-1/16
x= square root of y-1/4
y^-1= square root of x-1/4
Well, there are 3 feet in 1 yard, and 1.09 yards in 1 meter, so then

notice, we use the ratio, and whichever unit you want cancelled, you simply flip the ratio to have it cancelled, if the "m" is atop and you need that cancel, use the ratio with the "m" at the bottom, m/m = 1, and so they cancel out, and so on.
If kubby has only 300g of minced beef, he should use 600g chopped tomatoes, 450ml stock, and 225ml red wine.
Reason:
300g of 400g is a 25% decrease, so all other ingredients must be multiplied by .75 to even the distribution.
I believe the answer is B) 50